TWS Stereo BT5.0 wireless earphones bluetooth in ear headset

SPECIFICATION

1.Chipset:   JL6983
2.Bluetooth verson:   BT5.3
3.Frequncy response sensitivity:  20Hz-20KHz
4.Effective distance:   >=11m(line)
5.Charging box battery capacity:    320mah
6.Earbuds battery capacity:   40mah
7.Standard voltage:    3.7V
8.Earbuds charging time:    About 60mins
9.Music playing time:   7H(volume 80%)
10. Talk time:    5H
11. MIC:   With MIC sensitivity -42db+-3db
12.Loudspeaker:  moving coil 10mm   Sensitivity 119db+-3db  1KHz
13.Earbuds battery model:   501012/3.7V/40Ah
14.Charging box battery model:    701535/3.7V/320mAh