Arturia KeyLab 25, USB Midi-Keyboard with 25 Keys semi weighted with velocity and aftertouch, 9 sliders, 2 clickable Encoders, 11 encoders, Pitch bend and Mod Wheel, 6 transport switches, 15 control buttons, octave up/down buttons, LCD-Display, Connectors: MIDI I/O, USB, Sustain pedal, Expression pedal, Aux footswitch, Breath controller input, Aluminum Housing with wooden Side Panels, Includes Analog Lab with 5000 synth sounds from the Arturia Classic Synths, USB bus-powered or optional Power supply 5V DC 500mA, Attention - internet connection required to authorize the product!