Pictured above: A Japanese Model 1 Sega Saturn in Ryo’s room in Shenmue on the television, and a black North American Model 1 Sega Saturn I have.
It always bothered me that Ryo has a Saturn in a story set before the Megadrive had come out. Even the Mark III (later to be rebranded as the Master System) was released a mere 13 months prior to the murder of Ryo's father.