Wireless bluetooth speaker with rechargeable battery. It is compatible with laptops, MP3/4 devices, tf/USB flash drive, or any audio device that is bluetooth compatible or has a 3.5 Mm jack input. With the bluetooth, it sends good interference-free performance, high data rate, and efficiency. It comes with a built-in FM radio to listen to your favorite radio stations To play Radio Stations 1. Insert mini USB Cable in device 2. Select Radio Mode 3. Gently Press Play/ Pause button.