ESI KeyControl 49 XT, MIDI Keyboard, 49-note full-size, velocity-sensitive keyboard, aluminium case with high glossy white side panels, pitch bend wheel, modulation fader, edit buttons for advanced programming, sustain foot pedal input, octave buttons to extend keyboard range, 4 endless encoders, programmable, powered via USB (no power adapter required), works with Windows 7 / Vista / XP & Mac OS X, Dimensions: 752 x 212 x 69 mm, weightt: 4,5 kg