?

Function:
?
Thank you very much for buying the hearing aid.When you watch movie,enjoy the drama,attend meeting,or have classes,
?
the product can help you to hear the sound clearly and loudly.While in forest,
?
if you want to hear very slight sound,it will be a good choice.
?
Specification:
?
1.Max sound output:110±5dB
?
2.Sound gain: ≥30dB
?
3.Total harmonic wave distortion: ≤10%
?
4.Frequency range:300-4000Hz
?
5.Input noise: ≤40dB
?
6.Voltage:d.c.1.5V
?
7.Current: ≤4mA
?
Package Contents:
?
1 unit of ear sound amplifier
?
1 instruction manual
?
2 units of AG5 batteries
?
3 units of earplug of different size