YAMAHA MIDI Keyboard 49-key standard keyboard with velocity sensitivity Size: 817 x 202 x 85mm Weight: 2.6kg Power-on tested. Includes keyboard本体 and AC adapter. Please download the manual from the YAMAHA website. Sound output via connection to a computer has not been tested, so please consider it as junk. Minor scratches, dirt, and yellowing are present. Everything in the photos is included.