The Game Gear is a handheld game console by Sega, released in various countries between 1990 and 1992. The Game Gear shares much of its hardware with the Master System, and can play Master System games through an adapter. Containing a full-color backlit screen with a landscape format, Sega positioned the Game Gear as a technologically superior handheld to the rival Game Boy but due to issues with its short battery life, lack of original titles, and weak support from Sega, the Game Gear was unable to beat the Game Boy. The Game Gear was succeeded by the Genesis Nomad in 1995 and discontinued in 1997. It sold approximately 11 million units.