1. Detachable portable shoulder strap
2. The mesh cover protects the speaker from water, dust and vibration
3. High sound quality stereo, support TF card or Micro SD card
4. Call function, noise cancellation microphone, let you answer the call without touching your phone
5. LED light function, your good outdoor helper

specification:
1. Bluetooth version: 5.0
2. Battery capacity: 2000mAh lithium battery
3. Speaker: 5W
4. Transmission distance: about 10m
5. Frequency response: 20Hz-20KHz
6. Signal-to-noise ratio: 85dB
7. Working voltage: 3.7V
8. Charging voltage: DC 5V
9. Charging port: Micro USB
10. Talk time: about 3h
11. Music playback: about 3.5h
12. Standby time: about 30 days
13. Charging time: about 2.5h (different charger specifications time are different)
14. Size: 182x70x70mm