This entry refers to the Game Boy Advance SP portable console. Since this system was not region locked, it encompasses all regions in which it was sold.
First released in Japan February 14, 2003, the Game Boy Advance SP — Nintendo model AGS-001 — resolved several problems with the original Game Boy Advance model. It featured a new smaller clamshell design with a flip-up screen, a switchable internal frontlight, a rechargeable battery, and the omission of the headphone jack, which requires a special adapter to be purchased separately. In some regions owners of the original Game Boy Advance received a special limited offer to trade their old models into Nintendo and merely pay the difference on the Advance SP. In mid September 2005, Nintendo released a significantly improved SP model, unofficially dubbed the "Mark II" or GBA SP +, in North America, and officially Nintendo model number AGS-101, that featured a high quality backlit screen instead of a frontlit, similar to the Game Boy Micro screen but larger.