1. Bluetooth 5.1; Chip: Jerry AC6973
2. Battery capacity: charging case 300mAh, earphone 35mAh
3. Charging time: 1.5 hours for charging case, 1 hour for earphones
4. Talk/music time: 4.5 hours; standby 120 hours
5. Size: 58*58*25mm; total weight: 35g
6. Support master-slave switching, call Siri