G&M Hearing Aid Personal Sound Voice Amplifier Behind Ear Hearing Aids Hearing Device for the Deaf

Description

Max Sound Output:    129dB ± 4dB    Max Sound Gain:    50dB ± 5dB    Harmonic Wave Distortion:    ?5%    Frequency Range:    450~3500 hz    Input Noise:    ?30 dB    Battery:    AG13 or A675 (Zinc Air Battery)    Working Voltage    dc1.5V    Working Current:    ?4 mA    Measurement:53x44x9mm    Net Weight:  8g    Packing Details:  PackagingGift color box    Color Box Size:92*72*30MM