This Audio Pipe DJAPB1280BT is a 12" 400 Watt PA Speaker With Handle And Wheels made of ABS plastic. It has a 2-Way configuration with an active filter and comes with a built-in handle and wheels for portability. The 12" woofer uses a 3" KSV voice coil with a 50 oz. magnet and the horn is made of a 3.5" Titanium driver. This unit is equipped with a Class D amplifier and has a USB Host/SD MP3 player. It also has a line output that allows for linking of additional powered cabinets. The rechargeable batteries are dual 12Volt / 12 Ah and this unit is 100V/220V switchable.