Chipset model JL6973
Bluetooth version 5.3
Bluetooth audio agreement HFP、HSP、A2DP、AVRCP、SPP、PBAP、TWS+
Bluetoothdistance 10M/33 feet（Depends on the functionof cell phone）
music time 6-7 hours
Battery box time 14hours
Charging port Type C
Earphone charging time 1 hour
charging time 2 hours
Earphone battery capacity 3.7V/35mAh
Battery box battery capacity Li-on3.7V/230mAh