NEW Bluetooth Digital Hearing Aid Ear Behind Kit BTE Sound Voice Amplifier
Support Bluetooth function. Normal working about 45 hours, bluetooth working about 3 hours. Input Noise:≤32dB. Max sound out put:118±4dB. Sound gain:≥32dB±2dB. Current:≤2mA. 1 x Shockproof case. 1 PC or 1 Pair Hosts.