Worlde Easykey 25 Key Portable USB MIDI Keyboard ControllerDescription:Size:320*100*30MMWeight:0.7KG25 can be assigned to the intensity of the distribution of keysPitch + \/ - button3 intensity curves and one kind of continuous (fixed) strengthTranspose functionUSB plug、For USB2.0 (full)Provide editing software editor、 which is edited by WORLDE software editorCompatible with Win8\/7\/XP\/Vista and Mac OSX.Drive free and hot-plug supportedCompatible with mainstream such as CAKEWALK pro audio and a sequencer softwareFeatures:25 velocity-sensitive mini-keyboard keys.4 programmable memory banks.6 control buttons: Edit、 Mod、 Pitch down \/ Pitch up、 Octave down \/ Octave up.1 rotary knob for tone adjustment.Plug and Play USB 2.0 cable、 no need of driver installation.USB bus powered - no additional power cable needed.Specifications:Color: BlackMaterial: PlasticOperating system: Support for Win 8 \/ Win 7 \/ Win XP \/ Win Vista \/ OSX.Item size: 34 * 10 * 3cm \/ 13.4 * 3.9 * 1.2inItem weight: 407g \/ 14.4ozPackage size: 39 * 11 * 5cm \/ 15.4 * 4.3 * 2inPackage weight: 544g \/ 19.2ozPackage Includes:1 * MIDI Keyboard Controller1 * USB Cable