Korg microKEY USB Powered Keyboard Bundle with Headphones and 10-Foot Instrument Cable USB MIDI keyboard -- thin, lightweight, and USB-powered 37 velocity-sensitive mini keys Octave Shift and Key Transpose features access the full MIDI note range Pitch Bend and Modulation wheels add expression to your performance Dual USB ports are ideal for adding Korg's nanoPAD or nanoKONTROL (or other USB devices) to your setup