Features: The speaker allows switching modes between BT mode, TF card mode, USB disk mode, FM mode. Support wirelessly playing music from your smartphone, Tablet PC, and other BT-enabled audio devices. Colorful LED Lights bring your eyes a luxury feast when listening to music, very suitable for camping, parties, picnic and more. Buttons can easily control playing/pausing, volume +/-, previous/next track, and mode switch. Compact and portable design, comes with a portable handle on the top, easy to take it anywhere. Rechargeable 600mAh lithium battery offers about 1-2 hours of music time depending on music volume.