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
Current: less than 4mA
Instructions:
The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silicone) 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 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