Model: M10
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