POLY BTE Type Hearing Aid LK128
Standard Features:
Attractive design, small and light.
Less noise, fine fidelity and tone.
With volume adjustment switch.
With ON/OFF switch.
Tested according to International Standard IEC118-7.
Specification:
Max Sound Output: 128dB
Sound Gain: more than 38dB
Total Harmonic Wave Distortion: less than 10%
Frequency Range: 400----4500Hz
Input Noise: less than 30dB
Voltage: 1.5V
Current: 3mA
Battery: with A675 Zinc-Air /AG13 Button /span>
Estimated Battery Life: Over 100 hours /35 hours
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