1, Bluetooth 5.4, chip: JL AC6973 2. Battery capacity: Charging box 300mAh, earphone 30mAh 3. Usage time: 4 hours 4. Size: 50*46*21.5mm; Total weight: 43.4g 5. With LED smart touch screen, multiple function settings can be operated directly by the charging box 6. The screen displays the current power and exact time of the earphones and charging box
