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Features:1. Plug and play, easy to use.2. One-click mute, RGB colorful dynamic lighting, more atmospheric.3. Built-in polymer battery power supply, long standby time and long-lasting battery life.4. Built-in ANC noise reduction technology, the sound is clear and delicate, and the sound pickup is more accurate.5. Supports wireless pairing and is compatible with all computers or mainstream audio systems.6. Metal anti-slip tripod design, stable and not easy to tip over; equipped with anti-spray net to effectively avoid problems such as wheat spray and sibilance.7. Suitable for live broadcast, recording, mainstream media, online karaoke, games, etc.Parameters:1. Microphone head: condenser type2. Directivity: cardioid3. Sensitivity: -38+/-3dB4. Frequency response: 20-20kHz5. Sampling rate: 48kHz6. Working voltage: USB DC 5V7. Battery capacity: 300mAh8. Battery life: about 8 hours9. Charging time: about 1.5h10. Usage distance: about 10m without obstacles11. Receiver weight: about 7.5g12. Transmitter weight: about 130g13. Tripod weight: about 107gPackaging list- Microphone x 1- Receiver x 1- Tripod x 1- USB cable x 1- USB-A to USB-C adapter x 1- User manual x 1

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1. 4 types of switchable directivity 2. Support microphone gain, headphone volume adjustment 3. Support one-button mute, audio output such as headphone speaker 4. Support 15mm standard spiral bracket interface Product parameters: 1. Directivity: Stereo / Omni / Uni / Bi-directional 2. Sensitivity: -46db +/- 2dB 3. Frequency response: 20Hz-20KHz 4. SNR: >36dB 5. Impedance: <=2.2Kohm 6. Cable length: 1.35m

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh,rugged and durable . 4. Includes tripod stand with mic clamp, adjust using angle.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh,rugged and durable . 4. Includes tripod stand with mic clamp, adjust using angle.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh, rugged and durable. 4. Includes fixed base stand with mic clip.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh, rugged and durable. 4. Includes fixed base stand with mic clip.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh, rugged and durable. 4. Includes fixed base stand with mic clip.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material, special tempering treatment on mic mesh, rugged and durable. 4. Includes tripod stand with mic clamp, adjust using angle.

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1. Mini and portable. Noisy cancellation. High quality mic, perfect voice recorder. 2. High performance microphone accurately reproduces sound. 3. Good quality abs material, special tempering treatment on mic mesh, rugged. 4. Classic fashionable appearance design 5. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc..

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1. Mini and portable. Noisy cancellation. High quality mic, perfect voice recorder. 2. High performance microphone accurately reproduces sound. 3. Good quality abs material, special tempering treatment on mic mesh, rugged. 4. Classic fashionable appearance design 5. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc..

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1. Directivity: heart-shaped pointing 2. Sensitivity: -46 db?±3 db 3. Impedance: <=2.2 k ohm 4. Power supply voltage: USB 4.5-5V DC 5. Frequency response: 30Hz - 18Hz 6. Line length: 1.8m

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1. Mini and portable. Noisy cancellation. Grade quality mic, perfect voice recorder. 2. High performance microphone accurately reproduces sound. 3. Good quality abs material, special tempering treatment on mic mesh, rugged. 4. Classic fashionable appearance design 5. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc..

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1. Mini and portable. Noisy cancellation. Grade quality mic, perfect voice recorder. 2. High performance microphone accurately reproduces sound. 3. Good quality abs material, special tempering treatment on mic mesh, rugged. 4. Classic fashionable appearance design 5. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc..

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1. Mini and portable. Noisy cancellation. High quality mic, perfect voice recorder. 2. High performance microphone accurately reproduces sound. 3. Good quality abs material, special tempering treatment on mic mesh, rugged. 4. Classic fashionable appearance design 5. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc..

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh,rugged and durable . 4. Includes tripod stand with mic clamp, adjust using angle.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh,rugged and durable . 4. Includes tripod stand with mic clamp, adjust using angle.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material,special tempering treatment on mic mesh,rugged and durable . 4. Includes tripod stand with mic clamp, adjust using angle.

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Features: 1. High-sensitivity condenser microphone core, 360-degree sound pickup in all directions, long-distance sound pickup 2. Built-in USB audio digital processing chip, make the recording full, without distortion, plug and play, no need to install sound card driver, compatible with various computer systems 3. Free 360-degree rotation design 4. Cool RGB lighting, long press for 3 seconds to switch lighting effects (8 modes can be switched) 5. Type-C audio cable, pluggable, good conductivity, make the sound more crisp Product specifications: 1. Pointing: Heart-shaped pointing 2. Sensitivity: -45dB+/-3dB 3. Frequency response: 20Hz-20KHz 4. Impedance: less than or equal to 2.2 kiloohms 5. Bit rate: 24bits, 96KHz 6. Power supply voltage: DC 4.5-5V 7. Cable length: 1.7m

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1. High-sensitivity condenser microphone core, cardioid pointing, making the sound quality clearer 2. Built-in USB audio digital processing chip, make the recording full, without distortion, plug and play, no need to install sound card driver, compatible with various computer systems 3. The microphone can be freely rotated 360 degrees 4. The volume can be adjusted (the knob adjusts the volume), short press to mute 5. Cool RGB lighting, long press for 3 seconds to switch lighting effects (9 modes can be switched) 6. Standard USB to TYPE-C cable, 1.7M, pluggable, good conductivity, making the sound clearer 7. Pointing: cardioid pointing 8. Sensitivity: -45dB+/-3dB 9. Frequency response: 20Hz-20kHz 10. Impedance: less than or equal to 2.2K ohm 11. Bit rate: 24bits, 96kHZ 12. Power supply voltage USB 4.5-5V DC 13. Dimensions: 80x70x175mm 14. Weight: 583g

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1. Transmitting power: about 10dB 2. Frequency response: 40HZ-16KHZ 3. Pickup method: dynamic microphone core 4. Power supply mode: 2 x AA (not included) 5. Frequency deviation: about 10KHZ 6. Operating distance: 30m (barrier-free) 7. Use time: about 10 hours 8. Directionality: cardioid 9. Number of channels: 20 channels can be switched 10. Applicable occasions: sales, karaoke, video chat, lectures, teaching, business meetings, home entertainment and recording, etc. 11. Applicable equipment: Compatible with most equipment with 6.3mm microphone input interface, such as: KTV audio, outdoor audio, 5.1 theater, power amplifier and other equipment. 12. The microphone uses UHF band 13. With on/off button, volume adjustment button

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Features:1. Microphone volume adjustment, with LED light display2. Self-connection after booting, frequency is stable3. 30 meters barrier-free and stable transmission4. Freely place 2 AAA batteries (not included) in the battery compartment, work continuously for 6 hours5. Real-time monitoring, clear sound, no stuck, constant frequency6. Support SLR, mobile phone, audio and other equipment connection7. Equipped with two lavalier microphones and two hose microphones, customized condenser microphone core, metal material, anti-drop and durable8. Support one-to-one and one-to-two modes of use, no serial frequency, flexible collocation, easy to deal with various scenarios9. Multi-purpose and multi-compatible, making short video creation, live sound pickup, program interviews, online class teaching, etc. have good sound qualityparameter:1. Transmitting power: greater than or equal to 10dB2. Frequency response: 80HZ-16KHZ3. Pickup method: condenser microphone core, cardioid pointing4. Power supply: 2×AAA (not included)5. Frequency offset max: +/-10KHZ6. Use distance: 30M (barrier-free)7. Number of channels: 25CH8. Directivity: Cardioid9. Signal-to-noise ratio: greater than or equal to 81dB10. THD: less than or equal to 0.1%

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Features: 1. Suit design, with anti-blowout net, shock-proof frame 2. Quick touch to mute 3. Clear sound quality with cardioid pointing 4. Foldable and adjustable tripod stand 5. Pluggable Type-C audio cable Product specifications: 1. Sensitivity: -45dB+/-3dB 2. Directivity: cardioid 3. Impedance: less than or equal to 2.2 kiloohms 4. Power supply voltage: DC 5V 5. Frequency response: 20Hz-20KHz 6. Bit rate: 16bit 7. Sampling rate: 48KHz 8. Signal-to-noise ratio: greater than 82dB 9. Cable length: 1.8m

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Features:1. Support RGB ambient lighting, dynamic lighting effects, more atmospheric.2. Touch one button to mute, easy to operate and control as you wish.3. Built-in ANC intelligent noise reduction, the sound quality is clear and noise-free.4. Metal anti-slip tripod design, stable and not easy to tip over; equipped with anti-spray net to effectively avoid problems such as wheat spray and sibilance.5. With USB-A to Type-C converter, plug and play, can be used for mobile phones or tablets and other devices.6. Suitable for recording, gaming, streaming, etc.Parameters:1. Microphone head: condenser type2. Pickup pattern: cardioid3. Sensitivity: -38+/-3dB4. Frequency response: 20-20kHz5. Sampling rate: 44.1/48KHZ6. Power supply method: USB DC 5V7. Directivity: single direction8. Cable length: 1.8m9. Connector: USB-A / USB-C10. Product weight: about 388gPackaging list:- Microphone x 1- Tripod x 1- USB cable x 1- USB-A to USB-C adapter x 1- User manual x 1

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Features: 1. Aluminum alloy anodizing process 2. The mesh cover adopts a gradual mesh design centered on the wheat base to form a regular beauty. The visual center of the product is clearer and has better permeability 3. High sensitivity 14mm condenser microphone core, single-point pickup, long pickup distance, full recording without distortion 4. Suitable for recording vocals, live broadcast, online K song, musical instrument performance, online games and other occasions, compatible with major mainstream systems and equipment 5. 3.5mm interface Product specifications: 1. Type: 14mm condenser microphone core 2. Directivity: cardioid 3. Frequency response: 20Hz-20KHz 4. Sensitivity: -36dB+/-3dB 5. Load impedance: greater than or equal to 2.2 kiloohms 6. Operating voltage: 1.5V power supply for sound card 7. Product size: 144x56x40mm

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1. Aluminum alloy anodizing process 2. The mesh cover adopts a gradual mesh design centered on the wheat base to form a regular beauty. The visual center of the product is more clear and has better permeability! 3. The heart-shaped pointing pickup, the pickup distance is long, and the recording is full and undistorted 4. Support the knob to adjust the microphone volume and headset volume 5. Support headphone output 6. Suitable for recording vocals, live broadcast, online K song, musical instrument performance, online games and other occasions. Compatible with major mainstream systems and equipment. 7. Pointing: Heart-shaped pointing 8. Sensitivity: -45dB+-3dB 9. Frequency response: 20Hz-20kHz 10. Impedance: about 2.2Kohm 11. Bit rate: 24bits, 96kHZ 12. Power supply voltage: USB 4.5-5V DC 13. Cable length: 1.7m

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material, special tempering treatment on mic mesh,rugged and durable. 4. Includes tripod stand, adjust using angle, adjust height.

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1. Quality condenser microphone idea for singing or chatting on internet, online game, video chatting and video conference, such as Skype, Youtube, Twitch etc. 2. Classic fashionable appearance design. 3. Good quality abs material, special tempering treatment on mic mesh,rugged and durable. 4. Includes tripod stand, adjust using angle, adjust height.

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1. 1/2.9 inch CMOS, 2.8mm lens 2. Support MJPEG and H.264 dual stream, running faster 3. Fixed focus wide-angle lens, 2.1 million pixels 4. The rate can reach 1080P: 30fps 5. Support RS-232, RS-422, control protocol VISCA, PELCO-D, PELCO-P 6. 64 preset positions, 4 kinds of speed optional / 355 degrees horizontal rotation / vertical 120 degrees 7. Video output interface: USB2.0 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface

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1. 1/2.9 inch CMOS 2. Support MJPEG and H.264 dual stream, running faster 3. 10x zoom wide-angle lens, 2.1 million pixels 4. Rate up to 1080P: 30fps 5. Support RS-232, RS-422, control protocol VISCA, PELCO-D, PELCO-P 6. 64 preset positions, 4 kinds of speed optional / 355 degrees horizontal rotation / vertical 120 degrees 7. Video output interface: USB2.0 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface

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1. 1/2.9 inch CMOS 2. Support H.264 format, running faster 3. 3x zoom wide-angle lens, 2.1 million pixels 4. Rate up to 1080P: 30fps 5. Support RS-232, RS-422, control protocol VISCA, PELCO-D, PELCO-P 6. 64 preset positions, 4 kinds of speed optional / 355 degrees horizontal rotation / vertical 120 degrees 7. Video output interface: USB2.0 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface

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1. 1/2.7 HD color CMOS 2. 2.3mm fixed focal, 110 degree wide-angle lens, 2.1 million pixels 3. Output format: 1080P25, 720P30/25, 640*480, 640*360 4. 64 preset positions, 4 cruises, horizontal 355 degrees, vertical 135 degrees 5. Cruise call, boundary scan 6. Support RS-232, support PELCO-D and VISCA protocol 7. Video output: USB-B 2.0 interface, MJPEG encoding format 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface 9. Size: 180x112x129mm 10. Net weight: about 520g

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1. 1/2.7 HD color CMOS 2. 10x zoom lens, 79 degree horizontal view, 2.1 million pixels 3. Output format: MJPEG 1080P25, 720P30/25, 640*480, 640*360 4. 64 preset positions, 4 cruises, horizontal 355 degrees, vertical 135 degrees 5. Cruise call, boundary scan 6. Support RS-232, support PELCO-D and VISCA protocol 7. Video output: USB-B 2.0 interface 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface 9. Size: 180x112x129mm 10. Net weight: about 520g

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1. 1/2.8 HD color CMOS 2. 10x optical zoom, 58 degree horizontal view lens, 2.0 million pixels 3. Output format: MJPEG 1080p@30fps/25fps, 720P@30fps/25fps, 640*480,640*360 4. 64 preset positions, 4 cruises, horizontal 355 degrees, vertical 135 degrees 5. Automatic cruise, boundary scan 6. Support RS-232, support PELCO-D and VISCA protocol 7. Video output: USB 2.0 type B jack 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface 9. Size: 180x112x129mm 10. Net weight: about 550g

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1. 1/2.7 HD color CMOS 2. 3x Zoom, 110 degree wide-angle lens, 2.1 million pixels 3. Output format: MJPEG 1080P25, 720P30/25, 640*480, 640*360 4. 64 preset positions, 4 cruises, horizontal 355 degrees, vertical 135 degrees 5. Cruise call, boundary scan 6. Support RS-232, support PELCO-D and VISCA protocol 7. Video output: USB-B 2.0 interface 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface 9. Size: 180x112x129mm 10. Net weight: about 520g

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1. 1/2.8 HD color CMOS 2. 3x optical zoom, 110 degree wide-angle lens, 2.0 million pixels 3. Output format: MJPEG 1080p@30fps/25fps, 720P@30fps/25fps, 640*480,640*360 4. 64 preset positions, 4 cruises, horizontal 355 degrees, vertical 135 degrees 5. Automatic cruise, boundary scan 6. Support RS-232, support PELCO-D and VISCA protocol 7. Video output: USB 2.0 type B jack 8. Support infrared remote control, desktop installation/ceiling installation and provide standard tripod installation interface 9. Size: 180x112x129mm 10. Net weight: about 550g

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1. 1/2.8 inch Progressive CMOS 2. Effective pixels reach 3.5 million 3. HD video output: HDMI, YPbPr, HD-SDI, DVI, USB 2.0, VBS 4. 10x optical zoom 5. Resolution: 1920*1080 6. Rotate view angle: 355 degrees in horizontal, 210 degrees pitching scope 7. RS-232/422 serial port control, available control protocols: PELCO, VISCA 8. 9 preset positions can be set by remote control, 255 preset positions can be set by PC or control keyboard 9. Size: 245x175x165mm 10. Weight: 1550g 11. Packing list: - Camera x 1 - DC12V power adapter x 1 - IR remote control x 1 - Operation manual x 1 - RS-232C serial control cable x 1 - YPbPr cable x 1 - Hoisting bracket x 1

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1. 1/2.8 inch Progressive CMOS 2. Effective pixels reach 3.5 million 3. HD video output: HDMI, YPbPr, HD-SDI, DVI, USB 2.0, VBS 4. 20x optical zoom 5. Resolution: 1920*1080 6. Rotate view angle: 355 degrees in horizontal, 210 degrees pitching scope 7. RS-232/422 serial port control, available control protocols: PELCO, VISCA 8. 9 preset positions can be set by remote control, 255 preset positions can be set by PC or control keyboard 9. Size: 245x175x165mm 10. Weight: 1550g 11. Packing list: - Camera x 1 - DC12V power adapter x 1 - IR remote control x 1 - Operation manual x 1 - RS-232C serial control cable x 1 - YPbPr cable x 1 - Hoisting bracket x 1

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1. 1/2.8 inch Progressive CMOS 2. Effective pixels reach 3.5 million 3. HD video output: USB2.0, HDMI 4. 20x optical zoom 5. Resolution: 1920*1080 6. Rotate view angle: 355 degrees in horizontal, 210 degrees pitching scope 7. RS-232/422 serial port control, available control protocols: PELCO, VISCA 8. 9 preset positions can be set by remote control, 255 preset positions can be set by PC or control keyboard 9. Size: 245x175x165mm 10. Weight: 1550g 11. Packing list: - Camera x 1 - DC12V power adapter x 1 - IR remote control x 1 - Operation manual x 1 - RS-232C serial control cable x 1 - YPbPr cable x 1 - Hoisting bracket x 1

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1. Use USB driver-free design, built-in high-power mid-woofer speaker 2. 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 3. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, no dead spots for radio within 20-30 square meters, one person can walk around freely during a meeting, and when a multi-person meeting, everyone can sit in their own position at ease without being particularly close or Is a mobile omnidirectional microphone 4. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing of high-quality 16K-24K audio sampling and calculation, allowing software video conferencing applications Can get clear and clean voice communication quality 5. Suitable for all kinds of video conferencing and instant messaging software, plug and play 6. The design of hands-free speaker microphone makes it easier for users to participate in software video conferences or use instant messaging software 7. Operating voltage: 4.5-5.5V 8. Sensitivity: -34 +/- 3 dB 9. Frequency: 100-10,000 Hz 10. Output impedance: less than or equal to 2.2 kiloohms 11. Signal to noise ratio: greater than or equal to 58dB 12. Sound pressure level: 95dB 13. Current consumption: less than or equal to 0.5mA 14. Echo cancellation: 256ms 15. Audio processing: AEC/AGC/NR/NLP/ALC 16. Working humidity: -20-90% 17. Dimensions: 210 x 193 x 43mm 18. Weight: 425g 19. Cable length: 3m 20. Support system: Windows8/windows7/vista/xp/2000/Mac10.5/Android

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. Using 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 2. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, effective diameter of 6-12 meters, no dead spots within 20-60 square meters, free to walk around when one person is in a meeting, and everyone can sit in their own place at a multi-person meeting No need to get close or move the omnidirectional microphone 3. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing 16K-24K audio sampling and calculation, so that software video conferencing applications can be obtained Clear and clean voice communication quality 4. The design of hands-free speaker microphone makes it easier for users to participate in software video conferences or use instant messaging software 5. Compatible with USB 1.0 & 2.0, free drive design 6. Speaker sampling frequency: 24Khz 7. Microphone sampling frequency: 16Khz 8. Operating voltage: 4.5V-5.5V 9. Sensitivity: -34 +/- 3 dB 10. Microphone frequency: 100-10,000 Hz 11. Output impedance: less than or equal to 2.2 kiloohms 12. Signal to noise ratio: greater than or equal to 58dB 13. Sound pressure level: 115dB 14. Compatible system: Windows8/windows7/vista/xp/2000/Mac10.5/Android 15. Size: 325x340x64mm, weight: 650g 16. Cable length: 5m 17. Packing list: omnidirectional microphone, USB high-speed audio cable, manual, certificate of conformity, warranty card

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1. Using USB 2.4G wireless digital signal driver-free design, built-in high-power HIFI-level audio speakers 2. Using 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 3. Built-in 1 omnidirectional high-sensitivity dual-condenser microphone, effective diameter of 6-12 meters, no dead spots within 20-60 square meters, free to walk around when one person is in a meeting, and everyone can sit at ease in a multi-person meeting. Position, no need to be particularly close to or move the omnidirectional microphone 4. Suitable for all kinds of video conferencing and instant messaging software, plug and play 5. Built-in a 3.5mm mobile phone audio interface, you can connect the mobile phone with YS-M21W, it is very convenient to conduct conference calls; and has the HIFI music function, after pressing the HIFI button, the speaker immediately switches to 48Khz mode, so that the music can be restored more realistic 6. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing 16K-24K audio sampling, calculation, so that software video conferencing applications can be obtained Clear and clean voice communication quality 7. Built-in 3.7V-2500mAh lithium battery, working time is more than 8-10 hours under fully charged state 8. Compatible with USB 1.0 & 2.0, driver-free design 9. Equipped with intelligent two-color led lights, which can easily display the status of each function 10. Speaker sampling frequency: 24Khz-48Khz, microphone sampling frequency: 16Khz 11. Operating voltage: 4.5V-5.5V 12. Sensitivity: -34 +/- 3 dB 13. Frequency: 100-10,000 Hz 14. Output impedance: less than or equal to 2.2 kiloohms 15. Sound pressure level: 115dB 16. Signal to noise ratio: greater than or equal to 58dB 17. Compatible system: Windows8/windows7/vista/xp/2000/Mac10.5/Android 18. Size: 325x340x64mm 19. Weight: 715g 20. Cable length: 3m

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1. Use USB driver-free design, built-in high-power HIFI-level audio speakers 2. Using 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 3. Built-in 3 single-pointing high-sensitivity double condenser microphones, effective diameter of 6-12 meters, no dead spots within 20-60 square meters, free to walk around when one person is in a meeting, and everyone can sit at ease in a multi-person meeting. Position, no need to be particularly close to or move the omnidirectional microphone 4. Suitable for all kinds of video conferencing and instant messaging software, plug and play 5. Built-in a 3.5mm mobile phone audio interface, you can connect the mobile phone with YS-M23, it is very convenient to conduct conference calls; and has HIFI music function, after pressing the HIFI button, the speaker immediately switches to 48Khz mode, so that the music can be restored more realistic 6. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing 16K-24K audio sampling, calculation, so that software video conferencing applications can be obtained Clear and clean voice communication quality 7. Equipped with intelligent two-color led lights, which can easily display the status of each function 8. Compatible with USB 1.0 & 2.0, driver-free design 9. Compatible system: Windows8/windows7/vista/xp/2000/Mac10.5/Android 10. Speaker sampling frequency: 24Khz-48Khz, microphone sampling frequency: 16Khz 11. Operating voltage: 4.5V-5.5V 12. Sensitivity: -40 +/- 3 dB 13. Frequency: 100-10,000 Hz 14. Output impedance: less than or equal to 2.2 kiloohms 15. Sound pressure level: 115dB 16. Signal to noise ratio: greater than or equal to 58dB 17. Size: 325x340x64mm, weight: 680g 18. Cable length: 3m 19. Packing list: omnidirectional microphone, USB high-speed audio cable, 3.5mm mobile phone audio data cable, manual, certificate, warranty card

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1. Using USB driver-free design, 5 dual-condenser microphones work synchronously, making the radio more sensitive 2. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, effective diameter of 6-12 meters, no dead spots within 20-60 square meters, free to walk around when one person is in a meeting, and everyone can sit in their own position when meeting with multiple people No need to approach or move the omnidirectional microphone 3. Using 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function 4. The design of hands-free speaker microphone makes it easier for users to participate in software video conferences or use instant messaging software 5. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing 16K-24K audio sampling, calculation, so that software video conferencing applications can be obtained Clear and clean voice communication quality 6. A 3.5mm microphone and headphone audio jack is provided, allowing users to connect a microphone or headphone. And provide a 3.5mm audio input and output interface, which can be directly connected to mobile phones, tablet computers and other devices 7. Compatible with USB 1.0 & 2.0, free drive design 8. Equipped with intelligent two-color led lights, which can easily display the status of each function 9. Compatible with various embedded terminals and various video conferencing software 10. Speaker sampling frequency: 24Khz-48Khz, microphone sampling frequency: 16Khz 11. Operating voltage: 4.5V-5.5V 12. Sensitivity: -36 +/- 3 dB 13. Frequency: 100-10,000 Hz 14. Output impedance: less than or equal to 0.68 kiloohms 15. Sound pressure level: 110dB 16. Signal to noise ratio: greater than or equal to 58dB 17. Compatible system: Windows8/windows7/vista/xp/2000/Mac10.5/Android 18. Dimensions: 325 x 340 x 64mm, weight: 810g 19. Cable length: 5m

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1. Full-duplex voice call clear technology, 360-degree pickup without dead ends, the pickup distance can reach a radius of 4 meters, it is recommended to use the distance within a radius of 3 meters 2. It can control the speaker volume, microphone volume, mute and other functions of the microphone 3. Adopt 2.4G wireless transmission technology, no interference wireless transmission above 10M, longer transmission distance, wider transmission bandwidth, and more stable transmission signal 4. It can be controlled by the remote control of the conference camera, and the conference mode and music mode can be switched freely by using the remote control 5. The machine can be charged through the USB interface, providing 1Ah fast charging, and can work continuously for 12 hours 6. Equipped with intelligent two-color led light, which can easily display the status of each function, such as power, volume, mute, etc., and can intelligently prompt the user to charge 7. Six body buttons: volume up, volume down, microphone mute, speaker mute, MIC selection, power switch, convenient for users to operate 8. Support external headphones or speaker devices with amplifiers 9. Sensitivity: -22dBFS 10. Signal to noise ratio: 60dB 11. Frequency response range: 20Hz-15kHz 12. Echo cancellation: 256ms 13. Sampling rate: 16kHz/48kHz 14. Use interface: USB2.0 Type A 15. Transmission mode: 2.4G wireless transmission 16. External output interface: 3.5mm headphone jack 17. Charging port: Mini USB 18. Power adapter: DC5V+/-0.2V, 1A 19. Charging time: about 4 hours, usage time: about 12 hours 20. Standby time: 3 months 21. Dimensions: 178x162x47mm 22. Weight: 425g

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1. Full-duplex voice call clear technology, 360-degree pickup without dead ends, cascaded pickup distance up to 8 meters, recommended use distance within 6 meters. 2. 1+1 wireless microphone cascade, 2 microphones are transmitted through a wireless receiver, and the speaker volume, microphone volume, mute and other functions of a single microphone can be separately controlled. 3. Adopt 2.4G wireless transmission technology, no interference wireless transmission above 10M, longer transmission distance, wider transmission bandwidth, and more stable transmission signal. 4. It can be controlled by the remote control of the conference camera, and the conference mode and music mode can be switched freely by using the remote control. 5. The machine can be charged through the USB interface, providing 1Ah fast charging, and can work continuously for 12 hours. 6. Equipped with intelligent two-color led lights, which can easily display the status of each function, such as power, volume, mute, etc., and can intelligently prompt the user to charge. 7. Six body buttons: volume up, volume down, microphone mute, speaker mute, MIC selection, power switch, convenient for users to operate. 8. Support external earphone or speaker device with power amplifier. 9. Sensitivity: -22dBFS 10. Signal to noise ratio: 60dB 11. Frequency response range: 20Hz-15kHz 12. Echo cancellation: 256ms 13. Sampling rate: 16kHz/48kHz 14. Use interface: USB2.0 Type A 15. Transmission mode: 2.4G wireless transmission 16. External output interface: 3.5mm headphone jack 17. Charging port: Mini USB 18. Power adapter:DC5V+/-0.2V, 1A 19. Charging time: about 4 hours, usage time: about 12 hours 20. Standby time: 3 months 21. Dimensions: 178x162x47mm 22. Weight: 940g

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1. Full-duplex voice call clear technology, 360-degree pickup without dead ends, pickup distance up to 4 meters in radius, and up to 8 meters in diameter 2. It can control the speaker volume, microphone volume, mute and other functions of the microphone 3. Equipped with smart two-color led lights, which can easily display the status of each function, such as power, volume, mute, etc. 4. Six body buttons: volume up, volume down, microphone mute, speaker mute, MIC selection, power switch, convenient for users to operate 5. Support external headphones or speaker devices with amplifiers 6. Built-in high-power speaker, automatic gain control provides stable audio output 7. Sampling rate: 16kHz/48kHz 8. Transmission method: USB wired 9. Audio output interface: 3.5mm headphone jack 10. Interface: Mini USB plug and play 11. Sensitivity: -22dBFS 12. Signal to noise ratio: 60dB 13. Frequency response range: 20Hz-15kHz 14. Echo cancellation: 256ms 15. Dimensions: 178x162x47mm 16. Cable length: 5m

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1. Use USB driver-free design, built-in high-power mid-woofer speaker 2. 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function, no matter how far away the speaker is, the sound can be picked up clearly 3. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, no dead spots for radio within 20-30 square meters, one person can walk around freely during a meeting, and when a multi-person meeting, everyone can sit in their own position at ease without being particularly close or Is a mobile omnidirectional microphone 4. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing of high-quality 16K-24K audio sampling and calculation, allowing software video conferencing applications Can get clear and clean voice communication quality 5. Suitable for all kinds of video conferencing and instant messaging software, plug and play 6. The design of hands-free speaker microphone makes it easier for users to participate in software video conferences or use instant messaging software 7. Speaker sampling frequency: 24Khz-48Khz, microphone sampling frequency: 16Khz 8. Operating voltage: 4.5V-5.5V 9. Sensitivity: -34 +/- 3 dB 10. Frequency: 100-10,000 Hz 11. Signal to noise ratio: greater than or equal to 58dB 12. Sound pressure level: 95dB 13. Current consumption: less than or equal to 0.5mA 14. Echo cancellation: 256ms 15. Audio processing: AEC/AGC/NR/NLP/ALC 16. Output impedance: less than or equal to 2.2 kiloohms 17. Support system: Windows8/windows7/vista/xp/2000/Mac10.5/Android 18. Dimensions: 137x137x33mm 19. Cable length: 3m

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1. 360-degree sound pickup without dead ends, with a pickup radius of up to 4 meters 2. Built-in 1 high-sensitivity MIC using beamforming microphone array technology 3. Connection method: Bluetooth wireless reception 4. Equipped with intelligent two-color led lights, which can easily display the status of each function 5. Support external headphones or speaker devices with amplifiers 6. Compatible with various embedded terminals and various video conferencing software 7. Suitable for occasions of small meeting rooms of 15 square meters or personal participation of leaders, very suitable for employees on business trips 8. Not only can connect to various types of terminals via USB, but also connect to mobile phones, tablets, etc. for voice calls via Bluetooth wireless technology. 9. 7 days long standby, exquisite and durable 10. With full-duplex echo cancellation, dynamic noise suppression, automatic gain control and other voice processing technologies. Special optimization processing for noise reduction, without any echo or noise 11. Excellent voice playback system, loud speaker volume up to 80dB 12. System support: Windows, Mac OSX, Android 13. Microphone frequency response: 100Hz-8KHz 13. Speaker frequency response: 100Hz-22KHz 14. Size: 137x137x33mm

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