I have the most reliable time piece known to man....water proof guaranteed, never breaks, guaranteed and when it does, you don't need it any longer, accurate to within 15 minutes (how much more accuracy do you really need), costs nothing and is infinitely versatile and calibratable (is that a word?).
It's me, my stomach tells me when I am hungry, when I am sleepy I sleep, a use the sun to stay within 15 minutes even through clouds one can see brighter areas.
Always in fashion, no one wants to rob you for it. Goes with everything. Never forget it. Pretty much zero maintenance.
Only thing it is very poor on and that is dates...I forget which day of the week it is and what is the dates. Gotta get that fixed!