Specification:

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.

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Features:

Maximum sound output: 130u0026nbsp;±u0026nbsp;5dBu0026nbsp;u0026nbsp; u0026nbsp;

Sound gain: more than 50dBu0026nbsp;u0026nbsp; u0026nbsp;

Total harmonic distortion:u0026nbsp;less thanu0026nbsp;5%u0026nbsp;

Frequency range: 300Hz ~ 40000Hzu0026nbsp;u0026nbsp; u0026nbsp;

Input Noise: less than 30 dBu0026nbsp;u0026nbsp; u0026nbsp;

Operating voltage: 1.5Vu0026nbsp;u0026nbsp; u0026nbsp;

Battery model LR44

Current:u0026nbsp;less thanu0026nbsp;4mA

Weight: 74g

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Instructions: u0026nbsp;

The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silica gel) to connect to the headphone connector pedestal u0026nbsp;

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 ON switch to 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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