Casio Men's G9100-2 G-Shock Gulfman Tide and Moon Watch

 (25 customer reviews)

Solid watch for those who like a watch on steroids. Functions work well with no issues. Lights up nicely at night. The blue color is unique and breaks the monotony of the normal black style for this watch without being "loud" in color.

Tide function of the Casio watches is the only one I've found you can custom set up by the lunitidal interval for any given area. Granted, it's tricky and requires you to look up the info yourself and put that interval in but the manual does come with a sizeable list intervals of beaches all over the world. If you care to you can program it to your beach based on your local info. A quick search on the web will yield instructions on how to do this.

The Gulfman has its ups and downs. Firstly, its features (i.e. time, day, date, stopwatch, timer, world time, alarm, moon phase, and tide graph) come in handy. I am 21 years old and have been a licensed and avid scuba diver since I was 11; I needed a new dive watch after mine finally gave out and flooded, and I didn't feel it was necessary to drop half a grand on the G-Shock Frogman, although it was very tempting. I needed a watch that was capable of withstanding at least 180 feet of underwater submersion and possessed timer/stopwatch capabilities. The moon and tide graphs are an extra bonus, especially considering that the tide graph mode will depict the approximate tide for any specific time of day. The backlight is also nice to have in an underwater scenario (i.e. cave, wreck, and night diving) and is clearly visible. The watch fits snuggly to the wrist without any sliding around.

The watch itself is, however, a little bulky, although fairly light, especially when...Read more

This is a typical G shock. Exceptional watch as always. I am a surfer and needed a new tide watch, I have had a few before and figured this would be similar. All of the functions worked great, except the tide graph. I still am working on it! The tide watches I've had were very basic, but accurate. This watch requires the latitude be entered and for my time zone the booklet says 77, which according to my GPS should be 73. I entered both and still cannot get an accurate tide. I should have went with the Rip Curl.