WORLDE Orca mini25 Portable 25-Key USB MIDI Keyboard Controller with 16 Backlit Trigger Pads 8 Assignable Control Knobs Features: 25 velocity sensitive -keys with 3 velocity curve and 1 constant velocity; 8 Assignable rotary knobs each can be edited by user. 16 velocity & pressure sensitive performance pads with backlit can be assigned easily as pads MIDI note buttons. 2 sensors of dynamic bend and modulation strips; Play and record transport control buttons. Powerful and creative Arpeggiator for generating ideas quickly; Fixed Chord mode; Brilliant OLED display for immediate parameter setting. 6.35mm standard sustain pedal jack compatible with switch pedal; you can also to your hardware with standard 3.5mm TRS MIDI Out jack. USB 2.0(FULL SPEED) interface compatible with Win XP/7/8/10/ and OSX drive free and hot-plug supported; Power supplied by USB.