Features: 48 velocity and pressure sensitive performance pads with backlit can be assigned easily as pads MIDI buttons or program change switches. 8 assignable knobs and 8 assignable sliders each can be edited by user very flexible to operate. 16 function buttons providing functions like Note Octave After touch Channel Velocity Mute etc. With MIDI IN & MIDI OUT USB 2.0 connection compatible with Win10/8/7/XP/ and OSX drive free and hot-plug supported. Supports supplied by USB and 5V plug and play start your creative work at any moment. Specifications: Color: Black Material: Supply: 5V or USB 2.0 Operating System: Support for Win XP/ / Win7/ Win8/ Win10/ OSX Item Size: 25.6 * 25.6 * 2cm/ 10 * 10 * 0.8in Item Weight: 870g/ 1.9lbs Package Size: 31 * 29.5 * 7cm/ 12.2 * 11.6 * 2.8in Package Weight: 1195g/ 2.6lbs Note: You need to connect MIDI controller with software editor before usage. You can download users manual and software editor for website(www..com.cn) on QUICK START paper. If you want to use this MIDI controller with your smartphone or tablet you need to purchase one OTG cable separately. This MIDI controller hasn t sound module inside you can t get sound by connect it to headphones or speaker instantly. Package List: 1 * MIDI Controller 1 * USB Cable 1 * Cable 1 * 3.5mm Connection Cable