Check the listing for details. M-VAVE 25-Key USB MIDI Keyboard Controller with 8 Backlit Drum Pads 8 Knobs J0H1. Condition: New. Listed at 62.92 USD. Features: 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. Specifications: Material: ABS Battery: 2000mAh Keys: 25 velocity-sensitive key Pads: 8 RGB back-lit pads with velocity-sensitive & aftertouch Knobs: 8 assignable endless 360 degree encoders Touch Stripes: Capacitive touch-stripes pitch bend & modulation control Item Size: 321 * 178 * 46mm / 12.64 * 7.01 * 1.81in Item Weight: 765g / 26.98oz Package Weight: 1043g / 36.79oz Package Size: 38 * 22 * 7cm / 14.96 * 8.66 * 2.76in Packing List: I9102 1 * Keyboard 1 * USB Cable 1 * Manual (English)