In design as in life, every migration process is a hard one to achieve. Just as moving from one place to another implies the change of paradigms, codes and language, when it comes to migrating from bigger screens to smaller, 320 pixels average screens, the evolution of both physical and mental habits is demanded.
In this ever changing process, precision and context become the main qualities to consider while designing for a SmartWatch. Whereas an average analog, non smart watch offers a precise delivery of the hour, minutes and seconds at a glance, a SmartWatch should excel at delivering messages and notifications to the user.
This is the very point when context becomes most important: the value of the notification will increase when delivered in the proper situation. Receiving an alert for the ultimate sale at a convenience shop, for instance, will only make real sense for the user while he or she is passing by it, not when he is driving his way back to home. Then, it will be just a waste of time.