Don't get too confused, the Olympus Stylus 770 SW is only rated to 33 feet, so it is of very little use to divers! It is made for using while on the boat, beach, lake and such. It was never intended for divers and it will fail if you bring it too deep.

The Sealife DC600 is designed for scuba use and rated to 200 feet. It is a very nice dependable unit that will get you started un UW photography. You will quickly find with any camera you will need an external strobe or two to get good results so plan accordingly. I know the DC600 is available in a kit with strobes as well.

Hope I helped you out.

P.S. Welcome to our website! Hope you join us often.

Ace