In 1996, Nintendo released the Game Boy Pocket: a smaller, lighter unit that required fewer batteries. It has space for two AAA batteries, which provide approximately 10 hours of game play. Additionally the unit is also fitted with a 3 volt, 2.35mm x 0.75mm DC jack which can be used to power the system. The Pocket has a smaller link port, which requires an adapter to link with the older Game Boy. The port design is used on all subsequent Game Boy models, excluding the Game Boy Micro. The screen was changed to a true black-and-white display, rather than the "pea soup" monochromatic display of the original Game Boy. Also, the Game Boy Pocket (GBP) has a larger screen than the Game Boy Color (GBC) that later superseded it. The GBP's screen has a 65 mm (2.56 in) diagonal, 48.5 mm (1.91 in) width, and 43.5 mm (1.71 in) height, compared to a 59 mm (2.32 in) diagonal for the GBC. Although, like its predecessor, the Game Boy Pocket has no backlight to allow play in a darkened area, it did notably improve visibility and pixel response-time (mostly eliminating ghosting). The first version did not have a power LED. This was soon added due to public demand, along with new Game Boy Pocket units of different colors (released on April 28, 1997), some of them new to the Game Boy line.