1. Bluetooth version: 5.0; Chip: JLAC6936D
2. Battery capacity: 400mAh (charging box); 40mAh (left and right ears)
3. Charging time: about 1.5 hours for charging box; about 2 hours for earphones
4. Talk/music time: 4 hours; standby time: 200 hours
5. Total weight: 48g, single ear: 3g
6. Support master-slave switching