I've been looking for a waterproof tide watch or other solution (e.g. cell phone software) that can provide tide info for a specific location (e.g. tide times inside a bay or inlet).

Alot of the area I sail in is quite shallow and where I can go depends on what the tide is up to.

Does anyone have any suggestions?

Bonus points if the watch isn't too gigantic or expensive.

Additional info:

Unfortunately, although I can put Bluechart charts on my Garmin GPS--which include tide station info and predictions for my location--I cannot look at this info on the GPS unit only on the P.C. This is why I'm looking to find a watch or other solution.