Product Details

• Amazon Sales Rank: #852 in Watches
• Brand: Casio
• Model: G9100-1
• Dimensions: .30 pounds
• Band material: Resin
• Bezel material: Resin
• Case material: stainless-steel
• Clasp type: Buckle
• Dial color: black
• Dial window material: Mineral
• Movement type: Quartz
• Water-resistant to 660 feet

Features

• Quartz movement
• Protective Mineral crystal protects watch from scratches
• Case diameter: 45 mm
• Stainless-steel case; Black dial; Day-date-and-month functions
• Water-resistant to 660 feet (200 M)

Amazon.com Product Description
This Casio men's G-Shock watch is perfect for seafarers; it provides moon data and a tide graph so you'll always know what the tide is. In addition, the digital watch also shows the time in 29 time zones, has three multi-function alarms, a countdown timer, a stopwatch, and auto electroluminescent backlight with Afterglow. The stainless steel case has a black resin bezel that provides shock resistance. A matching black resin band provides a secure fit and the watch is water resistant to 660 feet (200 meters). It is covered by the manufacturer's 1-year warranty.

The G-Shock Story

G-Shock - Absolute Toughness

With the launch of its first watch in 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. Armed with cutting-edge technology developed for pocket calculators, Casio entered the field confident it could develop timepieces that would push watch technology forward.

Casio’s G-Shock line was created on just such a directive: to build a watch that never breaks. And in 1983, this product was developed to shatter the notion that a watch is simply a fragile piece of jewelry that needs to be handled with care.

G-Shock is renowned as the world’s toughest watch and is in the midst of a huge renaissance since its 25th anniversary celebration last year. It is the best trending watch brand in the industry right now and thanks to its toughness and durability as well as it’s cutting-edge technology, it is among the best values in not only timekeeping but all personal accessories.

In addition to toughness, 200 meter resistance and fantastic cutting edge and hip styling some G-shocks also have such technology as Tough Solar Power for battery life of 20-30 years (great for our planet), Atomic timekeeping for the more precise time available on earth as well as unique features like moon phase and tide graphs.

G-Shocks come in a variety of styles including Rubber/Resin bands, Solid Stainless Steel and even Titanium.

Since it’s launch, Casio’s G-Shock continues to evolve and push the envelope. The non-stop, self-adjusting (solar-powered atomic-timekeeping) G-Shocks featured in the Amazon.com assortment are the latest, greatest example of this evolution!

The Casio Story

In developing its own wristwatches Casio began with the basic question, "What is a wristwatch?" Rather than simply making a digital version of the conventional mechanical watch, we thought that the ideal wristwatch should be something that shows all facets of time in a consistent way. Based on this, Casio was able to create a watch that displayed the precise time including the second, minute, hour, day, and month — not to mention a.m. or p.m., and the day of the week. It was the first watch in the world with a digital automatic calendar function that eliminated the need to reset the calendar due the variation in month length. Rather than using a conventional watch face and hands, a digital liquid crystal display was adopted to better show all the information. This culminated in the 1974 launch of the CASIOTRON, the world’s first digital watch with automatic calendar. The CASIOTRON won acclaim as a groundbreaking product that represented a complete departure from the conventional wristwatch.

Casio transformed the concept of the watch — from a mere timepiece to an information device for the wrist — and undertook product planning based on this innovative idea. We developed not only time functions such as global time zone watches, but also other radical new functions using Casio’s own digital technology, including calculator and dictionary functions, as well as a phonebook feature based on memory technology, and even a thermometer function using a built-in sensor. The memory-function watches became our DATA BANK product series, while the sensor watches developed into two unique Casio product lines of today: the Pathfinder series displaying altitude, atmospheric pressure, and compass readings.

In 1983, Casio launched the shock-resistant G-Shock watch. This product shattered the notion that a watch is a fragile piece of jewelry that needs to be handled with care, and was the result of Casio engineers taking on the challenge of creating the world’s toughest watch. Using a triple-protection design for the parts, module, and case, the G-Shock offered a radical new type of watch that was unaffected by strong impacts or shaking. Its practicality was immediately recognized, and its unique look, which embodied its functionality, became wildly popular, resulting in explosive sales in the early 1990s. The G-Shock soon adopted various new sensors, solar-powered radio-controlled technology (described below), and new materials for even better durability. By always employing the latest technology, and continuing to transcend conventional thinking about the watch, the G-Shock brand has become Casio’s flagship timepiece product.

Today, Casio is focusing its efforts on solar-powered radio-controlled watches: the built-in solar battery eliminates the nuisance of replacing batteries, and the radio-controlled function means users never have to reset the time. In particular, the radio-controlled function represents a revolution in time-keeping technology similar to the impact created when mechanical watches gave way to quartz technology. Through the further development of high radio-wave sensitivity, miniaturization, and improved energy efficiency, Casio continues to produce a whole range of radio-controlled models.

Customer Reviews

Old Gulfman better than new?
When I received my Gulfman, I immediately went to a tide chart and set up the watch for the tides. Worked well! The only problem was that the chart was so tiny that these older eyes couldn't read it without some help. Probably better for the younger set.
The NEW model of the Gulfman...atomic and such, do NOT do the tides and moon. What a pity....that makes THIS model more useful (and cheaper) than the new one.
I like the looks of this one...my first G-Shock. However, now having had this one (and given it away to a friend, who loves it...HIS first G-shock) I'm convinced that you should save your money and get the RISEMAN which tells temperature, barometer, altitude...all in a nice package.
BUT....the Gulfman I consider a BEST BUY! Best bangs for the buck...should be able to get this for about $60.

Despite its size, it's a comfortable and useful watch
PROS:
1) comfortable watch to wear: as other reviewers point out, it feels well balanced despite it's physical size.

2) Fits well, even for smaller wrist sizes: the material, shape of the band and its width all work to make this a comfortable watch.

3) Titanium backing (lightweight and resists corrosion).

4) The tide and moon functions seem to be fairly accurate and are fun/useful to have readily available.

5) Really, it's not that bulky when compared to many other watches. For example it's comparable to a self winding analog watch.

CONS:
1) It's bulk is felt if you wear it with tight fitting sleaves (such as knitted wrists on a jacket).

2) The booklet that comes with it is a little tedius to use (small pages and print), which may be why some people found it difficult to set up. However, you can easily find a .pdf file on the Internet that is full size and easier to read.

In general, the Moon Phase and Tide functions require you to invest a little more time in learning to use the watch - but that ought to be expected. In the end, you may even enjoy learning some of the science behind it.

gulfman tide
i love this watch because it has a nice big face and tells the tide height. I bought it so when i go on a cruise and stop at an island i will know how high or low the tides are. the watch look tougher and stronger than it looks online. Everyone who sees it likes too. this watch is tough, rough and unique. I collect g-shocks and happy that i added this one to my collection.