Headset Bluetooth

*Bluetooth 5.3
*Battery capacity: charging case 300mAh, earphone 25mAh
*Use time: 3.5h
*Standby time: 150h
*Open the lid and take out the headset to turn on the computer, support master-slave switching, and summon Siri
*Lighter type bullet cap design, zinc alloy mecha shell, full of science and technology