Well, I just bought this Gulfman for about a month now. So far, I am really satisfied with this watch. I have always wanted a G-Shock since I was little and I finally got one. I have been especially fond of casio watches, mainly G-Shocks. The timekeeping mode is very accurate and the world time function works great after I have set the UTC, Longitude etc. (It's in the manual). As far as I know, this is the only model with a titanium back and it is rust resistant of course. It looks good on my wrist, just fits me perfectly without being too bulky. The EL light is bright and vivid, makes it easier to see in dark places or at night. The Auto-light function is very convenient and the tide and moon graph is kind of cool as I am fond of these kinds of statistics (I like detailed info of the weather, geography etc.) Simply said, this is a watch that is tough, sleek, stylish and functional. I would recommend this watch to other people (or you can also choose the Gulfman Tough Solar model which is more expensive).