The product is an authentic instruction manual for the X-Men GamesMaster's Legacy game on the Sega Game Gear platform. It is an original manual manufactured by SEGA in the United States and is in the English language. The manual is for the Sega Game Gear model and is a physical copy in manual format. This item is in good used condition with some light ware. There are no missing pages or markings inside of the book. Please reference all pictures for more details of this item. Thank you, and have a wonderful day.