Arturia KeyLab MkII 49 White, USB Midi Keyboard, 49 Velocity sensitive keys with aftertouch, 16 Colour illuminated performance pads, 9 Faders, 9 Rotating control knobs, LC-Display, Category function, Pitch and Modulation wheel, Chord and Transpose function, Transport buttons, 5 Expression Control inputs, 4 CV outputs, 1 CV input, MIDI input and output, USB port, Input for external power supply, Aluminium housing, System requirements: Min. Windows 7 or MAC OS 10.8 or higher, 4 GB RAM, 2 GHz CPU, 7 GB free hard disk space for complete installation of the included software, DVD drive, Internet connection, Dimensions (W x D x H): 793 x 297 x 53 mm, Weight: 6.3 kg, Colour: White, Includes Analog Lab software, Piano V and Ableton Live Lites