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Noise-Free Function Behind The Ear Rechargeable Hearing Aid Specification: Max Sound Output(SSPL): 128 � 3dB
Sound Gain(SSPL): ≥50dB
Input Noise: ≤26dB
Frequency Range: 400-4200Hz
Working Current: 3.5mA
Total Harmonic Wave Distortion: 500Hz <= 3% 800Hz <= 5% 1600Hz <= 1% Rechargeable Battery: NI-MH
Recharge Time: 7 hours
Working Time: 16 hours
Dimension: 40mm x 13mm x...
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