Hearing Aids, enjoying a high reputation in the market, is popular with many customers from different countries.

Max Sound Output: 130 ± 5 dB
Max Sound Gain: ≥ 50 dB
Harmonic Wave Distortion: ≤ 5‰
Frequency Range: 300~4000 hz
Input Noise: ≤ 30 dB
Battery: AG13 Button battery
Max Working Hours with Standard Battery: 70 h
Working Voltage: D. C. 1.5V
Working Current: ≤ 4 mA
Measurement: 5.3× 4.4× 1.0 cm
Net Weight: 9 g (without Battery)
Special Function Key: None