2. Bluetooth: v5.3
3. Bluetooth Profile: A2DP, AVRCP, HFP; HSP
4. Working Voltage: 3.1v~4.2v
5. Charging voltage: 5v-1a
6. Headphone Battery Capacity: 50mAh
7. Storage box battery capacity: 2000mAh
8. Transmission Distance:>10m
9. Battery life up to [hours]: 6
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