On September 19, 2005 — shortly after the release of the Game Boy Micro and about a year after the launch of the Nintendo DS — Nintendo released an updated Game Boy Advance SP in North America, featuring a brighter backlit screen in place of the earlier model's frontlit display. It was Nintendo's first handheld system released worldwide with an integrated backlight, although the Japan-only Game Boy Light had used an electroluminescent backlit display several years earlier. The AGS-101 revision was not officially released in Japan, and the frontlit AGS-001 model remained on sale until production ended. The new model can be distinguished by the following features: • The box states "Now with a BRIGHTER backlit screen!" to distinguish the new model from the older, frontlit models. • The model number of the backlit SP is AGS-101, whereas the model number of the original frontlit SP is AGS-001. This can be found on the label at the bottom of the unit. • The mini button at the top center of the console's lower face is now referred to in the manual as the "Brightness Switch" and selects between two levels of brightness, "Normal" (Low) and "Bright" (High) with no off setting. On the frontlit models, this button turned the frontlight on or off only. With the backlight set to "Normal" (Low) the brightness still surpasses the original AGS-001 with the frontlight on. • When powered off, the backlit model's screen is completely black, but the frontlit model's screen is noticeably lighter. The North American backlit version comes in three standard colors: "Pearl Blue", "Pearl Pink" and "Graphite" (a greyer version of Onyx Black). There were also two
Toys "R" Us exclusive backlit models; a "
SpongeBob SquarePants" model and a "Limited Edition
Pikachu" model. In 2006, the AGS-101 backlit model also saw a very limited release in
Europe. The
European version was released in "Surf Blue" as well as re-issued in "Pink" and "Tribal" editions. Unlike the North American release, the European box does not feature any prominent text to distinguish the backlit models from the older frontlit models. In addition, only the "Surf Blue" color was unique to the AGS-101, the other two colors "Pink" and "Tribal" had already been released as frontlit models – for these reasons it can be very difficult to identify a European backlit SP. Apart from the AGS-101 model number on the base of the unit, the only other obvious distinguishing feature of the European backlit model is the large picture of the Game Boy Advance SP featured on the front of the box. (The European frontlit models of "Pink" and "Tribal" only feature small pictures of the Game Boy Advance SP on the sides of the box and Flower/Tattoo patterns on the front, respectively.) The AGS-101 Game Boy Advance SP was the final Nintendo handheld to have backward compatibility with
Game Boy and
Game Boy Color games in North America and Europe. == Unit colors ==