Features: 25 assignable velocity-sensitive keys to controller; 8 backlit trigger pads with 2 groups to switch. 8 MIDI control groups: 8 assignable control knobs plus 8 assignable control sliders. With Octave down & Octave up buttons and pitchbend & modulation touch strip; With 6.35mm sustain pedal jack. USB 2.0 Plug and Play no need of driver installation; USB bus powered and no additional cable needed. Compatible with Win10/ Win 8 / Win 7 / Win XP / Win / OSX; and compatible with most mainstream software like Cubase FLStudio Logic Live etc. Specifications: Color: White Material: Operating system: Support for Win10/ Win 8 / Win 7 / Win XP / Win / OSX. Item size: 37.3 * 19 * 3.3cm / 14.7 * 7.5 * 1.3in Item weight: 955g / 2.1lbs Package size: 41.5 * 21.5 * 5.5cm / 16.3 * 8.5 * 2.2in Package weight: 1245g / 2.7lbs Package List: 1 * MIDI Controller 1 * USB Cable