Guangzhou FeiEr Electrict Co.,LTD -

Guangzhou FeiEr Electrict Co.,LTD

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hearing aid
Specification: 63.7X40.9X45.5cm
Detail: Technical parameters: Maximum saturation HRTFS 129dB + 4dB. Full file 50dB + sound gain: 5dB Harmonic distortion: more than 5% Frequency response: a 450 ~ 3,500 hz Equivalent input noise: more than 30 dB With standard b...


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