Nektar Impact LX Mini, Portable MIDI Controller, With performance functions as well as DAW and instrument control, 25 Velocity-sensitive ""mini-size"" keys, 4 Selectable velocity curves, 8 rotary knobs, 1 volume knob, 8 LED drum pads, 2x Independent arpeggiator/note repeat, 3.5 mm Jack for foot switch (adapter to 6.3 mm jack included), Backlit Octave Up/Down buttons, Shift key activates second level for a total of 14 accessible key functions, 7 Transport buttons, USB Power supply, 1 Sustain pedal socket, USB, Class Compliant for true Plug and Play, Compatible with: Windows Vista or newer, OSX 10.7 or higher, Linux Ubuntu 14.04, iOS compatible in conjunction with Apple Camera Connection Kit, Dimensions: 390 x 185 x 38 mm, Weight: 1 kg, Incl. Bitwig 8-Track software (download)