1. Bluetooth version: 5.4 2. Chip: JL AC6983D4 3. Charging box battery capacity: 300mAh 4. Headphone battery capacity: 30mAh 5. Usage time: 4h 6. Equipped with LED smart touch screen, you can operate multiple function settings directly from the charging box 7. The screen displays the current battery level and accurate time of the headphones and charging box
