AKAI Professional APC Key 25 MK2, Ableton Live Controller Keyboard, 25 Velocity-sensitive mini keys, Octave select and sustain buttons, Transport control keys: play, pause, record, 5x8 clip launch matrix with illuminated RGB pads, Buttons for clip navigation, solo, mute, record arm and encoder assignment switching - volume, pan, send, device, 8 Encoders for controlling any parameter in Ableton Live, USB-B port for host connection and power supply, Dimensions (W x D x H): 315 x 192 x 45 mm, Weight: 886 g, Incl. USB cable and Ableton Live Lite (download)