1, Bluetooth 5.3; chip: Jerry AC6983
2. Battery capacity: 350mAh for charging compartment, 30mAh for earphones
3. Use time: 4 hours; standby time 200 hours
4. Size: 53.8*44.3*21.5mm; total weight: 43g
5. Support master-slave switching, summon Sir, touch operation, do not support pop-up window, do not support long press button to clear pairing function.