Bluetooth Version: V5.3
Bluetooth Profile: HFP, HSP, A2DP, AVRCP
Charging time: 2-2.5 hours
Battery Capacity: Earphone (25mAh) Case (250mAh) 
Operating distance: 10
Pack Contents:
Earphone x 2, Charging case x1, Type C USB cable x 1,
User Manual x 1