Casio has a product line called Duro200. As its name suggests, watches under this product line are rated to 200m W.R.
Here’s one that I handled recently. It has the basic time keeping and date features as well as a rotating bezel.
The most sophisticated model is a analog-digital one that has tide graph, thermometer, moon phase besides the standard features. Refer to the link below for more info.
Click on the image to see full size picture
Watch is provided by:
K2 Watch Co.