Product Description
standby time
one for 80hours,and set for 60 hours
Frequency
-90db
Sensitivity
98dB ± 3dB
Battery capacity
50mAh for left and right one
work time
4-5 hours,a set for 2-3hours
Charge time
1-2H
Function
noise cancelling,microphone,handfree call
Earhone
In-ear
Battery capacity
450ma