Super Power Telephone Pocket Hearing Aid Body Style Good for Answer the Phone

Description

Detailed Product Description Volume control,on/off switch N-H Switch,N for normal situation,H for increase the high frequency, when you are in the noise place,you can transfer N to H, it can make you hear better,With batteries and different size earplug Specifications: Max sound output: 129dB ± 4dB Max Sound Gain:: 60dB ± 5dB Harmonic Wave Distortion: ?5% Input Noise: ?30 dB Frequency Range: 250~3800 hz Voltage: 1.5V Current: ?4 mA Battery:5# dry battery Package included: • 1 x hearing aid amplifier • 3 x earplug (different size) • 1 x manual • 1 x case • 1 x tool