The PSP-2000 (marketed in PAL areas as "PSP Slim & Lite" and still marketed as PSP in North America, Japan, China, India, Italy, and Portugal) is the first redesign of the PlayStation Portable. At E3 2007, Sony released information about a slimmer and lighter version of the PlayStation Portable. The model numbers were changed to PSP-2000, following the previous region-based numbering scheme (cf. the PSP-1000 numbering scheme of the "old" PSP model). It was released on August 30, 2007, in Hong Kong, on September 5, 2007, in Europe, on September 6, 2007, in North America, September 7, 2007, in South Korea and September 12, 2007, in Australia. On January 8, 2008, built-in Skype Wi-Fi Internet phone service was added via firmware updates. The PSP 2000 system is 19% thinner and 33% lighter than the original PSP system (reduced from 23 mm to 18.6 mm and from 280 grams [9.87 ounces] to 189 grams [6.66 ounces]). Internal changes to achieve this include the removal of a metal chassis (used to reduce damage in the event of sudden trauma to the system resulting from the user dropping the system on a hard surface). Other changes include improved WLAN modules and Micro-controller, and a thinner and much brighter LCD. To cater for the original PSP generation's poor load times of UMD games, the internal memory (RAM and Flash ROM) was doubled from 32 MB to 64 MB with a part of it now acting as a cache, which also improved the web browser's performance.