When things get virtual we usually start by mimicking familiar physical world. We have mailbox, folder and envelope icons, "old phone" ringtones, and lot of other UI metaphors inspired by things now obsolete. Nothing wrong with that, as long as by doing this we do not limit our creativity. Take a look at this picture of Pebble watch:
In pebble argot this is called "watchface." This is a particularly popular one and there are dozens of variations of it in the Pebble store. The problem shown is that sometimes date "window" (at least this is what it is called on mechanical watches) is obstructed by watch hands and you could not tell the date. There is nothing you can do about it in old style mechanical watch, but on Pebble you can, for example, move the date window position around to make it always visible.