Sharper Image SBT1025BK Large Bluetooth Speaker With Lights, LED Sound System, Extra Loud, Extra Bass Versatile, powerful, and impressive, the Mega Sound System from Sharper Image is a one-stop party shop for your next big bash. Want to play loud, booming music? Hook up any Bluetooth-enabled smartphone, tablet, or laptop and hear your playlist in ultra bass. Microphone and guitar connectors transform this sound system into an amplifier, with bass and treble controls right on the Mega Sound System's front panel. How about built-in entertainment? Six light modes add a cool element to this speaker of striking size. USB charge-out feature recharges devices while in use, and the top cradle props up the device for optimal access and viewing.