Hearing Amplifier for Adults and Seniors,Rechargeable Digital Sound Amplifier Fit Ears with Dynamic Compression for Noise Reduction

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

Weight: 74g

Instructions:  

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

Hot 1 Pc Best Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable

• 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.