Feature:
*Bluetooth/USB/FM/AUX
* Bluetooth 5.0
* 7W DSPHi-Fi class D digital amplifier
* 2.5” Full range speaker with Bass Reflex system
* Built-in rechargeable Li-ion 18650, 1800mAh battery
* Charging time about 3.5 hours
* Playing time about 4 hours (mid volume at BT mode)