Portable Rechargeable Flashing LED Mini Cube Speaker Jukebox w/3.5mm Jack, USB Port, microSD Card Slot, Clock & FM Tuner LCD display, Connect smartphones, iPods, notebooks and more! 1.5-inch diameter built-in speaker, Built-in FM tuner w/antenna Built-in rechargeable battery Charges via mini USB port Plays MP3s through the microSD card slot or through the 3.5mm jack, Line-in for use with other audio players like iPods, iPhones, and more