Each Sega Note PC is modelled after a different console from the company's past, including the Mega Drive, Saturn and Dreamcast. A fourth model is also available in Sega blue.
Distributed by Japanese retailer Enterbrain, the four decals are interchangeable, although a premium model, which is powered by a 2.40GHz Intel Core i7-3630QM processor, is available with all four covers.
Costing between 99,750 - 194,250 Yen (£700 to £1,300), the company has no plans to release the laptops outside of Japan, reports RetroCollect (via VG247).
Sega's final hardware was the Dreamcast, which was released in Japan in 1998 before launching in the West the following year.
Microsoft, meanwhile, reportedly considered an acquisition of Sega prior to the release of the Xbox.
Sega has since gone on to develop multi-platform games, including Sonic & All-Stars Racing Transformed and Sonic Generations.
The company recently purchased Company of Heroes studio Relic Games for $26 million.
> Read Digital Spy's 'Sonic & All-Stars Racing Transformed' review
Watch a trailer for Sonic & All-Stars Racing Transformed below: