Hello frinds
The Watch operating system is based around three distinct areas - the watch face, Glances, and apps - with the digital crown the main physical controller, used to dial in and out of apps, elements within those apps, or return to the home page system
Sporting a rectangular display rather than a classic round face, it is a better shape for reading notifications, but the icons and user interface is predominantly circular in its approach - an apparent play on replicating the digital crown control that sits on the right side, slightly above the middle of the watch.
Fucher is good