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Noise-Free Function Behind The Ear Rechargeable Hearing Aid Specification: Max Sound Output(SSPL): 128 � 3dB Sound Gain(SSPL): &#8805;50dB Input Noise: &#8804;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...

New Product Hearing Machine Hearing Amplifier Digital Hearing Aid for Deaf Feature: 1. WDRC & AFC Digital Hearing Aid: AFC: The use of an adaptive feedback canceler (AFC) for howling suppression in hearing aids . WDRC: Wide dynamic range compression, the amplification system ever to compensate for the loudness sensitivity. 2. Button Volume Control & Volume Memory: Easy to control volume and...