Micro Ear Hearing Aid Rechargeable Mini Hearing Aids for Deaf People Ear Aid Device Hearing Sound Collector

1:Frequency range:300-3800MHz
2:Input Noise:<=32dB
3:Working about 35 hours
Features:
1.Max sound out put:118+/- 4dB
2.Sound gain:>= 32dB+/- 2dB
3.Total harmonic wave distortion:<= 7%
4.Frequency range:300-3800MHz
5.Input Noise:<=32dB
6.Voltage:d.c.1.2V
7.Current:<=2mA
8. Full charging with 4~6 hours
9. Working about 35 hours                                    

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