I'm with KRVRN -- my only requirements are 1) second hand, 2) waterproof, and 3) CHEEEEEEEP
No one at clinical is going to be impressed with an expensive watch anyway, and every day that you wear it to work (clinical) you're taking a chance that it will get destroyed at some point during the day. (One of the best things I ever got told in nursing school
(back in the dark ages) was, "Never wear anything to work that you would get upset about if it got ruined ...") Now, if you end up later in an office-type job in a controlled environment, and want to wear a nice watch to work then, go for it. And you can certainly wear as nice a watch as you can afford to class and on your own time ... But for clinicals as a nursing student, the closer to "disposable," the better. And there will be plenty of extra, unexpected expenses during nursing school -- you're better off saving your pennies for when you really need them.
Best wishes on getting your letter --