Yesterday I've got some comments on my vlog that clearly showed that some people don't understand what complications is on the Apple Watch. Here is a short video that explains whatever it is. Enjoy!
Complications makes it possible to have the information you want easily reachable directly from the watch face. Easy to glance at. And if you click on it you open the full app.
Not all watch faces are customizable for complications though. Some watch faces are more for cosmetics. I prefer watch faces where you can add as much information as possible.
Watch related videos from the Vlog playlist: http://goo.gl/vcb0Fn