in-ear noise reduction charging hearing aid headphones loudspeaker sound amplifier foreign trade popular style sound collector

in-ear noise reduction charging hearing aid headphones loudspeaker sound amplifier foreign trade popular style sound collector

入耳降噪充电助听耳机帮助听力的扩音器声音放大器外贸爆款集音器

10 piece

usb charging cable(配USB充电线)	USD $0.0	1119 piece available
usb charging cable(配USB充电线)	USD $0.0	4045 piece available

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SPECS:

1.Max sound out put:129+/- 3dB

2.Sound gain:>= 40dB+/- 5dB

3.Total harmonic wave distortion:<= 10%

4.Frequency range:450-3400MHz

5.Input Noise:<=32dB

6.Voltage:d.c.1.2V

7.Current:<=1.2mA

8. Full charging about 2~3 hours

9. Working more than 40 hours

Update time：20260315205325