- Bluetooth 5.4; Chip: JL AC6983D4-2. Battery capacity: Charging case 350mAh; Headset 30mAh-3. Usage time: 4 hours-4. Material: ABS； Size: 60.6 * 45.2 * 21.7mm; Total weight: 57.6g-5. Equipped with LED intelligent touch screen, multiple function settings can be directly operated from the charging compartment-6. The screen displays the current battery level and accurate time of the earphones and charging case