Specification:
Bluetooth solution: BK3266
Bluetooth version: V5.0
Bluetooth protocol: AVRCP,HSP,HFP,A2DP
Bluetooth Distance: 10M
ANC frequency: 20~600Hz
ANC noise cancellation: 25 ± 2db
Operating frequency: 2.402~2.480GHz
Battery specification: 350mAh
Charging voltage: 5V/ 1A
Charging time: about 2h
Bluetooth duration: about 20h
Bluetooth + noise cancellation duration: about 10h
Noise cancellation duration: about 33h
Accessory: charging cable, 3.5mm Aux cable
Color: black