FREE: Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable

The listing, Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable has ended.

Convenient wear
Low noise, low distortion;
For people with severe hearing loss;
Product use hearing assistive devices.
The scope of application of gas conduction hearing disorders.
Taboos otitis media or ear suppuration who are disabled.
Features:
Maximum sound output: 130 +_ 5dB
Sound gain: more than 50dB
Total harmonic distortion: less than 5%
Frequency range: 300Hz ~ 40000Hz
Input Noise: less than 30 dB
Operating voltage: 1.5V
Battery model LR44
Current: less than 4mA

1 pc

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