Feature: 1. 25 velocity sensitive mini keys, with 3 velocity curve and 1 constant velocity; 8 Assignable rotary knobs, each can be edited by user. 2. 16 premium velocity and pressure sensitive performance pads with RGB backlit, can be assigned easily as pads, MIDI note buttons. 3. 2 touch sensors of dynamic pitch bend and modulation touch strips; Play and record transport control buttons. 4. Powerful and Arpeggiator for generating ideas quickly; Fixed Chord mode; Brilliant OLED display for immediate parameter setting. 5. 6.35mm standard sustain pedal jack, compatible with switch pedal; you can also connect to your hardware with the standard 3.5mm TRS MIDI Out jack. 6. USB 2.0(FULL SPEED) interface, compatible with for Win XP/7/8/10/11/Vista and for OSX or higher systems, without drive and hot plug supported; Power supplied by USB. Specification: Specifications: Color: Black + White Operating system: Compatible with for Win XP/7/8/10/11/Vista and for OSX or higher Item size: 31.9 * 19.3 * 5cm/ 12.6 * 7.6 * 2in Item weight: 800g/ 1.8lbs . Package List: 1 * MIDI Controller 1 * USB Cable 1 * 3.5mm to MIDI Cable