Bluetooth V5.1 speaker with flashing RGB led light. Built-in FM radio. Equipped with the function hands-free call, ports for micro SD card, USB. Output power: 5W. Built-in lithium-ion battery with a capacity of 1200 mAh. Frequency response: 80Hz-18KHz. USB charging (cable included). Charging time: 3 to 4 hours. Playback time up to 3 hours. Range up to 10m.