1.Bluetooth specification: V5.0
2.Bluetooth profiles: HSP, HFP, A2DP and AVRCP
3.Operating distance: 10 meters Class II
4.Charging Box Battery with protection: 350mAh
5.Earbud Battery  : 30mAh
6.Talk time & Music playing time: Around 3 hours
7.Earbud standby time: Around 20 hours
8.Charging case standby time: 1 year
9.Easily charge USB-C port
10.Charging time: About  1 hours
11.Box charge earbud : 2 times
12.Total play time 9hours