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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

Model YS-M21W
Sensitivity -34 +/- 3 dB
Frequency Range 100-10,000 Hz
Impedance less than or equal to 2.2 kiloohms
SPL 115dB
Operation Voltage 4.5V-5.5V
Battery Capacity 2500mAh
Working Time more than 8-10 hours
Interface Mini USB
Cable Length 3m
Size 325x340x64mm
Weight 715g
Package Weight
One Package Weight 1.57kgs / 3.47lb
Qty per Carton 4
Carton Weight 7.72kgs / 17.02lb
Carton Size 40cm * 35cm * 40cm / 15.75inch * 13.78inch * 15.75inch
Loading Container 20GP: 476 cartons * 4 pcs = 1904 pcs
40HQ: 1105 cartons * 4 pcs = 4420 pcs

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