Bluetooth chipset: 6973D
BT version. V5.0
Frequency response. 20Hz-20KHz
Battery capacity of the earphones: 25mAh * 2
Battery capacity of the charging case. 300mAh
Working hours. 3H
Working distance: ≥ 10M
Headphone charging time: 1H
Charging time of the charging case: 2H
Speaker unit. 13mm
Color options. Black, white, pink.