1. Bluetooth 5.4, chip: JL AC6973
2. Battery capacity: charging case 400mAh; Headphones 40mAh
3. Use time: 7 hours
4. Size: 90 x 57 x 33mm; Total weight: 74g
5. Earhook in-ear design, no fear of high-intensity exercise
6. Support master-slave switching, up and down song switching, summoning Siri and other functions