USB master keyboard with 25 full size keys?? octave +/-?? pitch bend and modulation wheel?? 8x knob controllers?? LED display?? USB bus powered?? connections for optional sustain pedal?? includes USB cable. Color: Black 6 x AA size battery for portability.</br>MIDI socket: Keyboard MIDI Out USB and Keyboard MIDI Out USB B type: USB connect to Computer Other socket: Sustain jack 6 x AA size battery for portability</br>ATTACHMENT: Owner's manual?? USB cable</br></br>Product Description</br></br>USB master keyboard with 25 full size keys?? +/- octave?? pitch bend and modulation wheel?? 8x controllers?? LED display?? USB bus powered?? connections for optional sustain pedal?? includes USB cable. Color: Black.</br><br/>http://www.amazon.com/gp/product/B00VHKM6SQ