61 keys full size sensitive key support 61 notes to output simultaneously Wheels: Pitch and Modulation Control units: Data Entry wheel and MIDI/Select mode toggle button</br>Interface: USB-B interface(to send MIDI message or to provide power) ??Sustain Pedal interface?? two MIDI OUT interfaces USB-powered??</br>ATTACHMENT: Owner's Manual?? USB Cable.</br></br>Product Description</br></br>USB master keyboard with 61 full size dynamic keys?? pitch bend and modulation wheel?? LED display. 2x MIDI Out?? USB bus-powered?? connection for optional sustain pedal?? includes USB cable. Dimensions: 920 x 75 x 215 mm?? Weight: 3kg. Color: Black</br><br/>http://www.amazon.com/gp/product/B00WU6H78A