Specifications:
*Bluetooth Version: 5.0
*Bluetooth Chipset:
*Battery capacity: 40mAh
*Charge case battery capacity:350mAh
*Working range:10M
*Talk Time: 3-5hours
*Speakers: 10mm
*Frequency Response: 20HZ-20000HZ
*Impedance:32Ω
*Sensitivity: 96db±3DB
Packing List:
QTY:52*42*19CM/50 pcs/carton N.W:10.50KG/G.W:11.50KG
Package Contents:
2* bluetooth earphone 1* charging case 1* user manual 1* charging cable
0755-21002025 
info@xingxingsport.com 
