specification:

1,strictly selected and matched good quality chinese cells  

2,over-temperature protection            

3,for icom mobile:V8000, 2100H, 2200H, 208H, 2720H, F221, F121, F420, F320, F521, F621TR.

4,clear sound effect

 

microphone:              

Impedance:2.2Ω,
Sensitivity:-36dB /--2dB,
Frequency response:20Hz-1.7KHz   

speaker:                 

Sensitivity:82dB /-3dB,
Frequency response:200Hz-3.5KHz