Bte Hearing Aid - Max Sound Output 129â±4 Db, 52â±5 Db Gain, 450-3500 Hz Frequency Range, 50 Hours Battery Life, Digital Adjustment With Mode Key

Following Specification of BTE Hearing Aid :
Powerful hearing aids with cheap price.Max Sound Output: 129A 4 dB
Max Sound Gain:52A 5 dB
Harmonic Wave Distortion: a 5%
Frequency Range: 450~3500 hz
Input Noise: a 30 dB
Battery: AG13 button battery or AG675 Button battery
Max Working Hours with Standard Battery: 50 h
Working Voltage: D.C. 1.5V
Working Current: a 5mA
Measurement: 5.3x4.4x1.0 cm
Net Weight: 9 g (without Battery)

Featured Function: The output sound is digital adjusted by +/- key and have thirty-two stage
Special Function key: Mode key(select normal or high frequency)