Arturia KeyLab Essential 49, USB MIDI Keyboard, 49 Velocity-sensitive keys, 8 Velocity-sensitive pads with Aftertouch, 1 Clickable encoder, 9 Encoders, 9 Faders, 13 Buttons, Transport section, 4 Command buttons, LCD display, Pitch bend- and modulation wheel, Chord Play mode, Mackie/HUI control compatibility, Connections: USB, MIDI output, sustain pedal input, input for an optional power supply (not included, must be ordered separately), USB class compliant, Dimensions (W x H x D): 784 x 76 x 248 mm, Weight: 3 kg, Includes Arturia's Analog Lab software, a license for Ableton Live Lite, and a license for UVI Grand Piano @+*Note:* An internet connection is required for completing authorisation.@+@+