Chip: JL6973
Wireless: V5.3
Working range: 10m
Earphone battery capacity: 3.7V 30mAh
Music time: 3h
Standby time: 60h
Battery box capacity: 3.7V 300mAh
Battery box charging time: 2h and lasts upto 20h
Warranty : 1 Month ( Customers Using for more than 1 year and no complaints )