The Genesis Nomad, also known as Sega Nomad, is a handheld game console manufactured by Sega and released in North America in October 1995. The Nomad is a portable variation of the Sega Genesis home video game console (known as the Mega Drive outside North America). Based on the Mega Jet, a portable version of the home console designed for use on airline flights in Japan, Nomad was the last handheld console released by Sega. It could also be used with a television set via a video port.

Released late in the Genesis era, the Nomad had a short lifespan. It was sold exclusively in North America and uses regional lockout. Sega's focus on the Sega Saturn left the Nomad under-supported, and it was incompatible with several Genesis peripherals, including the Power Base Converter, the Sega CD, and the 32X.

Source: Wikipedia