mini hearing aid S-188
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Detailed Product Description
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1.Max Sound Output: 127dB ± 4dB 2.Max Sound Gain: 48dB ± 5dB 3.Harmonic Wave Distortion: f<1000Hz≤15%,f＞1000Hz≤10% 4.Input Noise: ≤32 dB 5.Frequency Range: 450HZ~3500HZ 6.Working Voltage: 1.4V 7.Working Current: ≤1.5mA 8.Battery: AG13 or A675 Special Function Key: N-H
Adustement,USA Knowles speaker
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