Yes, Windows already has its own system clock, right there on the bottom right corner of your interface. So, why would you want another clock?
The answer is that CrossGL Surface Clock is not just any clock. It's a fully scalable desktop clock that can be placed anywhere on your screen, rotated with total freedom and resized to any scale without losing quality. Plus, it doesn't require installation.
CrossGL Surface Clock looks really nice on the desktop and includes some configuration settings that let you customize it a bit more, like adding an animated background or making the clock transparent. Pity there are no skins included!
These settings are a bit hidden though; you have to hover your mouse on the clock's bottom-left corner until you see a button with a tick on it. The same applies to the resize, rotate and close buttons: they're all hidden in the clock's corners.
With CrossGL Surface Clock you'll enjoy a gorgeous, totally resizable desktop clock.