Portable MIDI keyboard controller from Xkey series that is 20% lighter than an 11-inch MacBook Air, weighing only 880 g, and extremely slim - only 16 mm high. It provides 37 full size, velocity-sensitive keys with polyphonic aftertouch, is 100% MIDI compliant and is powered and upgradable via a single USB cable, no batteries required. It can be used with any music apps on various devices, as well as free Xkey Plus application for custom configuration of the keyboard. The controller also provides pressure sensitive Pitch Bend and Modulation buttons, Octave +/- push buttons and Sustain button, activity indicator LED and robust, high-quality aluminium body that has the same finish as a MacBook. Provided is also a special Xport connector that works as a MIDI OUT, sustain pedal and expression pedal input. Micro USB cable is included in the package. Dimensions: 553 x 135 x 16 mm.