TWS Headphone, touch control Chipset: AC6936D BT Version: BT5.0 Distance: 10-20m Music time: 4Hrs Phone call: 4-5Hrs Standby: 400H Charging time: 1Hr Net W.:33.8g/set Headphone capacity: 30mA * 2 Charging box: 300mA(4-5 recharging times)