YouTubes StonedEdge created their Wii SPii with a folding screen design reminiscent of the Game Boy Advance SP, but with considerably more horsepower under the hood. The portable has a 3.5-inch 640×480 LCD display, a pair of hefty batteries that manage to muster about two-and-a-half hours of playtime. It took StonedEdge nearly a year to design and finish the portable and you can find a detailed log of their progress on the BitBuilt forums.”]
Source: https://gizmodo.com/hacker-miraculously-shrinks-a-nintendo-wii-to-the-size-1846844571