Features: 9 MIDI control groups: 9 knobs + 9 sliders + 9 buttons. 4 programmable memory banks. 6 transport buttons: Rew, Play, FF, Loop, Stop, Rec. 2 assignable buttons: used as MIDI CC switches. 1 rotary knob for tone adjustment 1 slider for volume adjustment. 2 buttons for sending settled control message.(controller number: 64/67) Plug and Play USB 2.0 cable, no need of driver installation. USB bus powered - no additional power cable needed. Specifications: Color: Black Material: Plastic Operating system: Support for Win 10 / Win 8 / Win 7 / Win XP / Win Vista / Mac OSX. Item size: 34 * 10 * 2cm / 13.4 * 3.9 * 0.8in Item weight: 431g / 15.2oz Package size: 39 * 11 * 4cm / 15.4 * 4.3 * 1.6in Package weight: 548g / 19.4oz Package List: 1 * MIDI Slim-Line Controller 1 * USB Cable