Specification:

Model Number: M163
Optional Color: Black, White.
Bluetooth Version: 4.1
Bluetooth Distance: 10m
Earphone Capacity: 60mAh
Talk Time: 3h
Music Time: 3h
Charging Time: about 2h
Standby Time: 100h
Compatible With: Samsung, Huawei, Xiaomi and other smartphones. Also  tablet PC, laptop.(if without Bluetooth function, need a adapter )
Features: power level display, adjust volume, switch songs, smart camera, multi-points function, voice prompt.

Package Included:

1* M163 Business Wireless Bluetooth Earphone            
1* USB Charging Cable    
1* Ear Hook                
1* User Manual