Wireless bluetooth earphone OEM ODM earbuds TWS bluetooth

SPECIFICATION

1.Chipset:  JL6983
2.BT Version:   BT5.3
3.Frequency response sensitivity:   20Hz-20KHz
4.Effective distance:  >=11m(line)
5.Charging box battery capacity:   320mah
6.Earbuds battery capacity:   30mah
7.Standard voltage:   3.7V

8.MIC:  with MIC sensitivity -42db+-3db
9.Music playing time:   5h  80%volume
10.Talk time:    4hH
11.Loudspeaker:   moving coil12mm   Sensitivity 107db+-3db  1KHz
12.Earbuds battery model:   400909/3.7V/25mAh
13.Operating:   Touch control
14.Charging box battery model:   601735/3.7V/350mAh
15.Weight:   36g