Worlde 25 keys Portable USB Keyboard MIDI Controller Semi-weighted Keys 8 RGB Backlit Trigger Pads LED Display with USB Cable It support IOS OCX PC Android system and it can connect IPD too. Compatible with many audio software like CAKEWALK etc support many APPs which can support coreMID like Apple Garage Band PianoApprentice Grand Piano Music Studio etc. Features: Professional master MIDI keyboard features brushed aluminum panel clear LED display and 25 semi-weighted keys with aftertouch. 8 high quality velocity & pressure sensitive performance pads with RGB backlit can be assigned easily; 8 assignable encoders each encoder can be edited by user. 5 buttons for MMC; 6 function buttons providing functions like PROGRAM CHANGE CHANNEL CONTROL ASSIGN TRANSPOSE OCTAVE EDIT; 2 touch sensors of dynamic pitch bend and modulation touch strips. 2 Assignable pedal interfaces(Pedal A Pedal B) compatible with switch pedal and continuous pedal which can be configured to 130 controllers; 1 MIDI OUT interface. USB interface adaptable to USB 2.0(full speed); Drive free and hot-plug supported; compatible with Win XP/7/8/10/Vista and Mac OSX; can be powered by USB and DC 5V. Specifications: Brand: WORLDE Model: Blue whale 25/37 Color: Silver/ Black(optional) Operating system: compatible with Win XP/7/8/10/Vista and Mac OSX Item size: 25keys 44 * 21 * 6cm/ 17.3 * 8.3 * 2.4in 37 keys 60.5 * 21 * 6cm/ 23.8 * 8.3 * 2.4in Item weight: 25keys 1810g/ 4lbs 37 keys 2425g/ 5.3lbs Package size: 51.5 * 26.5 * 11cm/ 20.3 * 10.4 * 4.3in Package weight: 2313g/ 5.1lbs Package List: 1 * MIDI Controller 1 * USB Cable