Don't let the micro-size of Coby's CSBT334CLR Bluetooth Speaker With LED Light Show size fool you because it's engineered to deliver big time sound and (courtesy of its TuneTrance technology) a one of a kind light show to match! Simply stream your tunes from any Bluetooth compatible device, or pop a MicroSD card into the built-in slot and thanks to the built-in rechargeable battery, prepare for hours of party! Need to stop and say a few words? No problem! Its unique Tunes N Talk system makes it easy to switch from super sounding music to seriously clear speakerphone!