At the risk of sounding like a 14 year old girl...I have a Baby G watch. Don't know if they still make them but it has a stop watch on, it has a little light that comes on when you press a button, is sturdy and is also pretty
I've had it for about 4 years, only had the battery changed once, never had any problems with it, it's great!
Not planning a trip to the US are you?!!! My mum goes over there a lot and always buys me a watch if i need one, she goes to Walmart (i think) and they do waterproof watches for $3. They are digital, with a light, stop clock, alarm etc etc. they always last well.
I have a casio one, it is digital and has a timer/stopwatch and a few other features, as well as telling the time! It's very useful for riding and only cost about £12.