- Bluetooth 5.4; Chip: JL AC6983D4-2. Battery capacity: Charging case 300mAh, headset 30mAh-3. Usage time: 4 hours-4. Material: ABS；Size: 50 * 46 * 23mm; Total weight: 47.3g-5. Equipped with LED intelligent touch screen, multiple function settings can be directly operated from the charging case-6. The screen displays the current battery level and accurate time of the headset and charging case