1, Bluetooth 5.3; chip: JL AC6983 2. Battery capacity: 300mAh for charging compartment, 30mAh for earphones 3. Use time: 4 hours; standby time 150 hours 4. Size: 54.2*46.2*21.4mm; total weight: 45g 5. Supports master-slave switching, summoning Sir, pressure-sensitive operation, does not support pop-up window function, does not support in-ear detection, does not support MagSafe magnetic wireless charging, does not support long-pressing the button to clear the pairing function