The Game Boy Avance SP (ゲームボーイアドバンスSP, Gēmu Bōi Adobansu Esupī?), released in February 2003, is an upgraded version of Nintendo's Game Boy Advance. The "SP" in Game Boy Advance SP stands for "Special". The SP was marketed at US$99.99 at launch. In September 2004, Nintendo lowered the price to US$79.99. The SP is accompanied by the Nintendo DS (released in November 2004) and the Game Boy Micro (released in September 2005).