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hearing aids rechargeable amplifier
$24.29
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Max Sound Output: 130±3dB
Sound Gain:≥40dB
Total Harmonic Wave Distortion: ≤10%
Frequency Range: 450-3000Hz
Input Noise: ≤32dB
Voltage: USB 5V/50mA
Current: ≤12mA
Battery: rechargeable battery
Battery Charing: 2 hours
battery using: 8-10hours
Mode option: 4 modes
Product size:168*130*18mm
Net. Weight: 29.5g
