1. Battery: Lithium 3.7V/400mAh
2. Working time: 3-4 hours
3. Standby time: 500 hours
4. Charging time: 3 hours
5. Speaker power: 3W
6. Speaker impedance: 4 ohm
7. Speaker size: 40 mm
8. Bluetooth frequency: 2402MHz～2480MHz
9. Transmit range: 10 meters
10. Chip: CSR4.0
12. 1pc USB charging cable