I really liked my Timex "Ironman" watch for my tri. (I also used it at work.)

$35-$40, waterproof as all get out, times eight ways from Sunday and has alarms if you need them.

Mine is now something like 5 years old, has had battery replaced once, and is still just roarin' along.

(my dress watch is also a Timex, I like Timex... YMMV)