Arturia KeyLab Essential 88 BE, USB MIDI Keyboard, Black Edition, With 88 velocity sensitive keys, 8 Velocity sensitive pads with aftertouch, 1 Clickable encoder, 9 Knobs, 9 Faders (30 mm), 13 Control buttons, 6 Buttons for transport control, Pitch bend and modulation wheel, LC display, Chord play mode, Mackie/HUI Control compatible, USB connection, MIDI output, Sustain pedal input, Input for optional power supply (not included), USB class compliant, Dimensions (W x D x H): 1260 x 261 x 63 mm, Weight: 8.5 kg, Incl. download software package: Arturia Analog Lab Software, Ableton Live Lite as well as UVI Model D Piano@+@+*Note:* Requires internet connection for software download.