TWS  wireless earphones bluetooth 5.0  sport headset with charging case 

Specification :

* BT Version:5.0                        

* Chipset: JL                               

*Support:HFP,HSP,A2DP,AVRCP

* Max playing time :    About 4 hours

* Stand by:100 hours

* Distance <=10M                       

* Battery Capacity:  80MAH

* Battery Capacity of charging box: 400mAh 

* Speaker:8mm 

*Sensitivity:98dB+/-5dB

*Frequency Range: 20Hz -20KHz