ZEALOT A2 Multifunctional Bass Wireless Bluetooth Speaker Built-in Microphone Support Bluetooth Call & AUX & TF Card & LED Lights (Blue)

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: 4000mAh lithium battery 3. Speaker: 3W 4. Transmission distance: about 10m 5. Frequency response: 10Hz-20KHz 6. Signal to noise ratio: 85dB 7. Working voltage: 3.7V 8. Charging voltage: DC 5V 9. Charging port: Micro USB 10. Talking time: about 10h 11. Music playback: about 10h 12. Standby time: about 90 days 13. Charging time: about 2.5h (different charger specifications time are different) 14. Size: 168x52x52mm