1. Bluetooth chip: Zhongke Lanxun
2. Bluetooth version: VER.5.0
3. Bluetooth frequency: 2.4GHZ
4. Battery capacity: 1800mA/3.7V
5. Bluetooth transmission distance: more than 10M
6. Charging port: Micro USB
7. Bluetooth transmission frequency: Class 2 (2.5mW)
8. Bluetooth antenna: built-in
9. Bluetooth protocol: A2DP/AVRCP/HFP/HSP
10. Rated power: 5W*2, distortion: THD less than 1%
11. Frequency response range: 60HZ-16HZ
12. Signal to noise ratio: greater than or equal to 90
13. FM frequency bandwidth range: N
14. FM Antenna: N
15. Battery life: more than 3.5H
16. Charging time: less than 3H
17. Working voltage: DC 3.3V-4.2V
18. Charging voltage: DC 5V+/-0.2V
19. Charging current: greater than or equal to 1A
20. Product size: 460x78x74.5mm