B00TDZPGKC Xkey 37 Key USB MIDI Controller Silver

37 full size keys, Fully compliant USB MIDI controller that works with any operating system and recording software
Ultra slim molded aluminum body housing is less than 1″ thick, weighing just over 2 lbs.
Polyphonic Aftertouch: Velocity controlled keys, with the ability to adjust settings such as sensitivity, velocity and timing
Includes X-cable breakout cable for additional Sustain, MIDI Out, and Expression