i cheap electronic casio. i used to hate wearing watches until i got to basic training and they took away our phones. after that, wearing a watch became easier and now i'm used to it. i don't bother with an expensive watch because if i'm training, it'll just get beat up.
basically, my only requirement was it had to be electronic so i can time myself on runs, have a plastic band and water resistant so it can be washed easily, and have a big illumination button. i hate trying to find a small button in the dark.
this is my watch