Axon B-19 Sound Enhancement Amplifier Hearing Aid Machine

Specifications:

• Max Sound Output: 130dB ± 5dB
• Max Sound Gain: 50dB ± 5dB
• Harmonic Wave Distortion: ?5%
• Frequency Range: 450~3500 hz
• Input Noise: ?30 dB
• Battery: AG5
• Working Voltage dc1.5V
• Working Current: ?4mA
• Analogue BTE, c
• ompact size Volume control On/off switch