Battery supplied portable MIDI controller with wireless function. 25 velocity-sensitive slim keys. 8 RGB back-lit pads with velocity-sensitive & aftertouch. 8 assignable 360-degrees rotary encoders. Capacitive touch-stripes pitch bend & modulation control. Sustain pedal port and MIDI out port all in one. Compatible with all digital audio workstation. USB connection, BT wireless connection, direct wireless, wireless MIDI OUT connection, and wireless adapter, multiple connection methods. Smart Chord and Scale feature make you get inspiration easily. Handy MIDI controller, portable, functional, and easy to use.