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New Best Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable#LY069
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.
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
The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silica gel) to connect to the headphone connector pedestal ?
The battery installation: Gently open the battery compartment cover, put a AG13/LR44 battery into the battery compartment in the right direction, then close the battery compartment .
Before you use this item ,you have to turn the O-N switch to O(off),and turn the sound volume to minimum
Then put this item on you ear, keep it tightly
Next, turn this item on(O-N to N), adjust the volume until you hear clear sound
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