1.Bluetooth Version: V5.0
2.Bluetooth Distance: 10m
3.Charging Time: about 1-2 hours
4.Standby Time: about 80 hours
5.Music Time:  about 3 hours
6.Talking Time: about 4 hours 
7.Earphone Battery: Polymer Lithium Battery 35mAh
8.Battery Box Battery: Polymer Lithium Battery400mAh
9.Audio transmission format: HFP/A2DP/HSP/AVRCP