1. Bluetooth version: 5.4, chip: JL AC6983 2. Battery capacity: charging case 350mAh, earbuds 30mAh 3. Usage time: 4 hours 4. Dimensions: 53.8 * 44.3 * 21.5mm; Total weight: 43g 5. Supports master-slave switching, song up/down switching, Siri activation, pressure-sensitive operation, and other functions. 6. It does not support the reset function by pressing and holding the button.
