Finally, for the devotees of true mobility, Sony created a true computer in a 500-gram (17.6 oz.) package that included a Core Solo, 1GB of RAM, an Edge modem, two cameras (0.3 and 1.3 MPixel), a keyboard, a touchscreen, a fingerprint reader, and the indispensable Bluetooth, Wi-Fi, and USB connections. It ran Windows XP or Vista and was the greatly improved successor to the previous-generation devices both in terms of functionality and form factor. Note that the US versions had a WWAN connection using the EDGE standard. They were called UX, starting with the UX17 and ending with the UX490 (released in November 2007), with the 180, 280, 380 and 390 models (in the US) emerging along the way.