The BJP-1516BT is a truly portable and amplified PA loudspeaker with integrated musicplayer, collapsible luggage style carrying handle, built in caster wheels and LED accentlighting. This model boasts a rechargeable battery, a power supply capable of operatingoff of 12V DC and a standard AC power connection making this unit extremely versatile. It comes with an integrated music player that can play mp3 files from SD cards or USB drives, Bluetooth connectivity for wireless music streaming. A ¼” guitarjack makes this unit capable of doubling as a guitar amp.