The Sega Dreamcast Mouse HKT-4200 MK-50173 is a white wired mouse designed specifically for the Sega Dreamcast platform. It is made of plastic and is compatible with the Sega Dreamcast console. This mouse, with a maximum number of players set at 1, does not come personalized and includes a registration card. As a part of the official Sega Dreamcast accessories, this mouse allows for a more immersive gaming experience and is a must-have for collectors and enthusiasts of retro gaming systems.