AXON B-19 HEARING AID B-19 Sound Enhancement Amplifier Behind The Ear Hearing Machine Behind The Ear Hearing Aid(Beige)
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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, compact size Volume control On/off switch
