The SP model.
The Game Boy Advance is a handheld video gaming system made by Nintendo. It featured 16-bit graphics, rectangular cartridges and a single screen. A second version of the system would be made and be named Game Boy Advance SP; this version would have a clamshell design and a screen with a backlight that could be turned on and off.
The system would be succeeded by the Nintendo DS; GBA games would be backwards-compatible with the newer system.