Thank you for viewing. This is a YAMAHA Music Sequencer QY20 unit (junk), instruction manual, and explanation video (VHS). ・Even when powered on, only noise appears on the screen for a moment, and nothing is displayed. ・When checked with headphones, a faint keyboard sound can be heard when the volume is near MAX. ・The same issue occurred when checked with batteries. ・Power adapter is not included. ・One DIN cable, which was stored together, is also included. ・The main unit, instruction manual, and video all have scratches, stains, and discoloration. Please check the photos. There are writings in the instruction manual. ・As I do not have a VHS video deck, I have not confirmed whether the video tape can be played. Please consider purchasing this item, understanding that it is old. Thank you.