Specifications: New Four Point Design Protection, Large Buttons & Display Format, Tide & Moon Data, Shock Resistant, 200M Water Resistant, Low Temperature Resistant LCD (-20 C / -4 F), Auto EL Backlight with Afterglow, Flash Alert (flashes with buzzer that sounds for alarms hourly time signal countdown timer time-up alarm countdown timer progress beeper and stopwatch auto-start), Tide Graph (tide level for specific date and time), Moon Data (moon age of the input data moon phase graph), World Time, 29 times zones (48 cities) city code display daylight saving on/off, 4 Multi-function Alarms and 1 Snooze Alarm, Hourly Time Signal, Countdown Timer, Measuring unit: 1 second, Countdown range: 24 hours, Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments), Other: Auto-repeat time-up alarm progress beeper, 1/100 second stopwatch (ST1), Measuring capacity: 999:59'59.99", Measuring modes: Elapsed time split time 1st-2nd place times, Other: 5-second Auto-start, 1/100 second stopwatch (ST2), Button Operation Tone on/off, Auto Calendar (pre-programmed until the year 2099), 12/24 Hour Formats, Accuracy: +/- 15 seconds per month, Battery: CR2025, Approx. battery life: 2 years, Module 3194 Bright, bold color and a slick design combine to give you the Men's G-Shock Rescue Watch from reliable designer Casio. With a large digital dial that is divided into sections for locating information quickly and easily, this modern timepiece offers tide and moon data, World Time with 29 time zones, five alarms, countdown timer, stopwatch, 12- and 24-hour formats, and day, date, and month information. Contrasting black accents detail the case, and the durable red resin strap closes with a buckle clasp. An EL backlight makes viewing easy in any light conditions, and large buttons are handy for operating the wide range of functions. Able to survive the toughest environments with its shock resistant technology, water resistant depth of 660 feet (200 meters), and low temperature resistant LCD, this dynamic watch is ideal for marine or outdoor enthusiasts as well as everyday adventurers.
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CasioWith the launch of its first watch in November 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. As a company with cutting-edge electronic technology developed for pocket calculators, Casio entered this field confident that it could develop timepieces that would lead the market.Today, Casio is focusing its efforts on solar-powered radio-controlled watches: the built-in solar battery eliminates the nuisance of replacing batteries, atomic timekeeping means the users never have to reset the time. Recently, Casio launched a series of Bluetooth watches that sync to the users cell phone to automatically update the time. Casio is always moving time forward. See more
Have a Question? See What Others Asked
how big is this watch, i.e. how many millimeters?
I know the dimensions, but does it appear "too big" for an 11-year old boy's wrist? He's athletic and we want to get him a watch for his birthday.
is there a smaller size?
Is this a legit casio g-shock? or is it like a replica? i gotta make sure i'm not buying the replica one, i don't want to make that mistake again.
Reviews
4.7
All from verified purchases
K**Y
Debating between a Gulfman or G7900 or looking for a red G-Shock? The G7900A-4 is awesome!
I have been eye-ing the Casio G-Shocking Rescue Red G7900 for some quite time. Casio has released several colors of this G-Shock, one being a limited edition negative display of the red version, but other colors such as white, olive green, black, and another black but with yellow display.But what caught my attention is the moon and tide graph. I have a Gulfman and G-Lide and the tide and moon display for the G7900 was one of the best I have seen out from Casio thus far. The display is nice and clear, not many obstructions as you get a circular moon tide graph on the upper left, tide graph on top and on the right, you get stop watch modes (for stopwatch 1 & 2). The larger display is the time and date.Of course, aside from the cool display and what really pulled me in was its red color. The red bezel and band really pops and love the black highlights throughout the watch. Unlike other G-Shock red watches that have orange, this one is red and black and really enhances an outfit (especially if you were a lot of dark colors, especially black and blue). This watch definitely compliments an outfit.As for the back case, it is stainless steel and you get the usual G-Shock Resist on the back.The battery used for the G7900A-4 is one lithium battery (CR2025) which lasts approximately 2 years (normal usage). Accuracy at normal temperature is +/- 15 seconds a month.Now, the band for the Rescue Red is also awesome looking! It doesn't have a shiny look but more of a matted resin look, which I like. The band is quite comfortable, but while not as perfect like the Mudman strap, it still fits comfortably on your wrist and at the base of the strap which connects to the case, there is a black guard that goes over the bumps of the band. Some people complained that watches with those ridges near the base hurt their wrist, so I felt that it was smart for Casio to include those black plastic guards on the back.I. THE FUNCTIONSThe G-7900A-4 features the moon and tide display on top. Day indicator on top and at the bottom is the time, seconds and date.Pressing the illumination button on the front gives you an aqua light which is the blue and blue/green illumination that many G-Shocks do come with. This G7900A-4 has two EL (electro-luminescent) panels that cause the entire display to glow for easy reading in the dark and also comes with an auto-light switch, if set, by a slight angle movement will make the light turn on. I have this turned off because I want my batteries to last long! You can set illumination from 3 to 5 seconds.The modes that come with the Casio G-Shock Rescue Red G7900A-4 is:* Timekeeping Mode* Tide/Moon Data Mode* Stopwatch Mode (ST1)* Stopwatch Mode (ST2)* Countdown Timer Mode* Alarm Mode* World Time Mode (48 Cities/29 Time Zones)The stopwatch modes have a display range of 999 hours, 59 minutes, 59.99 seconds and there is auto-start. As for alarm mode, is good and audible. You can also mute the tones as well.II. THE BUTTONSThe buttons are black and flat and not steel and have a feel similar to the Mudman's but of course, where the Mudman's are designed to keep mud out and takes much more pressure (and for some people, much harder to press), the buttons are easy to press on the G7900. There are four buttons and for the most part, one should not have problems with selections.III. WATER RESISTANCEThe Casio G-Shock Rescue Red G7900A-4 is marked at 20 Bar which means and this means you can go scuba diving and snorkeling with it.IV. TIME & MOON GRAPH DISPLAYThe Casio G-Shock Rescue Red G7900A-4 features a circular moon graph on the top left of the display. The moon phase indicator indicates the current phases of the moon as viewed at noon from a position in the Northern Hemisphere looking south. The watch performs a rough calculation of the current moon age from day 0 of the moon age cycle and the margin of error of the displayed moon age is +/- 1 day.The tide graph has six graphic segments, each of which indicates tide level. The tide graph displayed on the watch is based on the current moon age. The greater the error in a particular moon age, the greater the error in the resulting tide graph.IV. OVERALLI absolutely love this watch! It scores high on style (looks great if you wear a lot of black or darker clothing), high on comfort and the display, is stylishly cool, especially if you are looking for a larger tide display on a chunkier watch. The functions are awesome and you really get a lot for your money for the 7900 (I paid $64.99 during the holidaysfor the Rescue Red but they typically sell for under $90) and you can often find various versions on sale on Amazon by Amazon or third party fulfilled by Amazon as well.It's important to note that some people have received their G7900's in the tin G-Shock cases, I did not. Mine came in a black standard G-Shock cardboard box. The manual as usual with Casio G-Shock releases are quite thick, especially for this watch.There is really nothing negative that can be said about this watch. It's simple to set (if you are used to G-Shocks), otherwise you get a nice thick manual in various languages to peruse. The watch looks great, it is comfortable and Casio went all out in making sure that those who care about moon and tide displays get a cool watch. Also, the fact that you get the guards on the base of the straps is a plus. I have to say that while the Gulfman was created for the sea and has a pretty cool tide display, I prefer the Rescue Red over the Casio Gulfman in terms of aesthetics and also, it's a 20 bar watch, so you can go deep sea diving with it.I do recommend purchasing Vinylex Quick Wipes (or spray) to keep your G-Shocks protected (since Resin does tend to harden or crack if not cared for).But in the end, I have to give the Casio G-Shock Rescue Red G7900A-4 a pretty solid rating. For those looking for a red G-Shock, this is the best out there in my opinion. It's not too flash, it's stylish and cool. But most importantly, it has a lot of the features that make it a pretty awesome G-Shock.Highly recommended!
F**5
An excellent G-Shock watch for "Ocean Enthusiasts"
This is a truly gorgeous watch in the G-Shock line. As a guy that lives in a beach town, its "G-LIDE" functions were exactly what I was going for. And, as a former lifeguard (way, way back in college!), the "Red Rescue" variant was one that I definitely wanted to have. As a G-Shock, it sits at the upper-end of sizing but still less than some of the larger watches out there. So, how will it sit on your wrist? If you have a wrist sized at 7.25" like mine, then the pics I've attached to my review will be exactly what you can expect. I find that it's truly a comfortable watch to wear and has some great features to it. Overall, it's definitely a win! I've put in why with my categories below.Comfort = 5/5Yep, it's truly a comfortable watch to wear. With my wrist sized right at 7.25", it fits nicely in the 5th notch from the top of the watch (see the pic above). The flaps sitting just under the dial makes for an excellent fit on your wrist, too. That is a HUGE win when you're in the water. It just fits really well. Comparing it to my DW9052-2 (also reviewed on Amazon), I'd say that this is equal to comfort. I can (and have) slept with this watch on overnight and never had it feel uncomfortable at any time. The watch gives enough heft to let you know that you're wearing a watch BUT it never feels heavy.Appearance / Aesthetics = 5/5And, the watch just looks COOL! Yes, it really does! When you match it up with its "Rescue" features, you feel that it has the DNA of a lifeguard. The red primary color with the black buttons makes it an attractive watch that never feels overdone. The white lettering is a nice touch, too. Casio could've just made the letters black but the tri-color design truly works.Functionality = 5/5Considering its "G-LIDE" functions and G-Shock's usual countdown timer, 2 stopwatches, alarm, and World Time features, this is truly a winner. I found the setting of the watch to be easy, even plugging in the Tide and Lunar cycle information. The instructions show you how to plug in values with tables at the end of the booklet. However, to be truly accurate on your Tide and Lunar Cycle (e.g., Lunitide) information, I recommend consulting a dedicated resource on the Internet. I used a combination of info on 2 websites (tideschart.com, surf-forecast.com), a Lunitidal Interval calculator (lunitidal-interval.com), and an iPhone app that I bought to bring the most accurate info together on the watch. It asks for your Longitudinal and Interval info when you set up the watch. And, it's easy enough to change when you visit different coasts. The backlighting works very well and all of the buttons are easy to push and responsive.Transaction Experience = 5/5Amazon's Seller, "The Watch Locker", came through quite well with this purchase. They walked away with a 5-star rating from me for their delivery of the watch (right on their promised timeline), the condition that the watch arrived in (new in the box with all of the original packaging), and the watch is an authentic G-Shock (verified personally). The price of the watch was definitely competitive and worth every penny.Overall, this watch is an excellent addition to the G-Shock line and I am personally very pleased to have it in my collection. I also have the black version of the "Rescue" line which also comes away with an identical assessment to the red. However, if I had to choose between the two of them, the red one comes away as my favorite because, IMO, it truly comes away with the feeling that it's a "Sea Worthy" rescue watch.TIDAL ACCURACY UPDATEAfter wearing this and my black Rescue watch for several days, I found the tidal indicator to be inaccurate with my locally-verified Lunitidal values. However, I found the "secret" to getting the tidal bar to be completely accurate. After calculating your Lunitidal Interval, add 7 hours to your value in the watch and your tidal graph should now be accurate. My watch has been completely accurate for the last 2 days. So, an example is where your Interval is set to 2:26, you would add 7 hours to that for a new value of 9:26. I hope this helps any of you that noticed the same inaccurate tidal graph reading.
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Customer service was outstanding when I had questions about the product.
With the launch of its first watch in November 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. As a company with cutting-edge electronic technology developed for pocket calculators, Casio entered this field confident that it could develop timepieces that would lead the market.
Today, Casio is focusing its efforts on solar-powered radio-controlled watches: the built-in solar battery eliminates the nuisance of replacing batteries, atomic timekeeping means the users never have to reset the time. Recently, Casio launched a series of Bluetooth watches that sync to the users cell phone to automatically update the time. Casio is always moving time forward.
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The G7900A-4 is awesome!","reviewBody":"I have been eye-ing the Casio G-Shocking Rescue Red G7900 for some quite time. Casio has released several colors of this G-Shock, one being a limited edition negative display of the red version, but other colors such as white, olive green, black, and another black but with yellow display.But what caught my attention is the moon and tide graph. I have a Gulfman and G-Lide and the tide and moon display for the G7900 was one of the best I have seen out from Casio thus far. The display is nice and clear, not many obstructions as you get a circular moon tide graph on the upper left, tide graph on top and on the right, you get stop watch modes (for stopwatch 1 & 2). The larger display is the time and date.Of course, aside from the cool display and what really pulled me in was its red color. The red bezel and band really pops and love the black highlights throughout the watch. Unlike other G-Shock red watches that have orange, this one is red and black and really enhances an outfit (especially if you were a lot of dark colors, especially black and blue). This watch definitely compliments an outfit.As for the back case, it is stainless steel and you get the usual G-Shock Resist on the back.The battery used for the G7900A-4 is one lithium battery (CR2025) which lasts approximately 2 years (normal usage). Accuracy at normal temperature is +/- 15 seconds a month.Now, the band for the Rescue Red is also awesome looking! It doesn't have a shiny look but more of a matted resin look, which I like. The band is quite comfortable, but while not as perfect like the Mudman strap, it still fits comfortably on your wrist and at the base of the strap which connects to the case, there is a black guard that goes over the bumps of the band. Some people complained that watches with those ridges near the base hurt their wrist, so I felt that it was smart for Casio to include those black plastic guards on the back.I. THE FUNCTIONSThe G-7900A-4 features the moon and tide display on top. Day indicator on top and at the bottom is the time, seconds and date.Pressing the illumination button on the front gives you an aqua light which is the blue and blue/green illumination that many G-Shocks do come with. This G7900A-4 has two EL (electro-luminescent) panels that cause the entire display to glow for easy reading in the dark and also comes with an auto-light switch, if set, by a slight angle movement will make the light turn on. I have this turned off because I want my batteries to last long! You can set illumination from 3 to 5 seconds.The modes that come with the Casio G-Shock Rescue Red G7900A-4 is:* Timekeeping Mode* Tide/Moon Data Mode* Stopwatch Mode (ST1)* Stopwatch Mode (ST2)* Countdown Timer Mode* Alarm Mode* World Time Mode (48 Cities/29 Time Zones)The stopwatch modes have a display range of 999 hours, 59 minutes, 59.99 seconds and there is auto-start. As for alarm mode, is good and audible. You can also mute the tones as well.II. THE BUTTONSThe buttons are black and flat and not steel and have a feel similar to the Mudman's but of course, where the Mudman's are designed to keep mud out and takes much more pressure (and for some people, much harder to press), the buttons are easy to press on the G7900. There are four buttons and for the most part, one should not have problems with selections.III. WATER RESISTANCEThe Casio G-Shock Rescue Red G7900A-4 is marked at 20 Bar which means and this means you can go scuba diving and snorkeling with it.IV. TIME & MOON GRAPH DISPLAYThe Casio G-Shock Rescue Red G7900A-4 features a circular moon graph on the top left of the display. The moon phase indicator indicates the current phases of the moon as viewed at noon from a position in the Northern Hemisphere looking south. The watch performs a rough calculation of the current moon age from day 0 of the moon age cycle and the margin of error of the displayed moon age is +/- 1 day.The tide graph has six graphic segments, each of which indicates tide level. The tide graph displayed on the watch is based on the current moon age. The greater the error in a particular moon age, the greater the error in the resulting tide graph.IV. OVERALLI absolutely love this watch! It scores high on style (looks great if you wear a lot of black or darker clothing), high on comfort and the display, is stylishly cool, especially if you are looking for a larger tide display on a chunkier watch. The functions are awesome and you really get a lot for your money for the 7900 (I paid $64.99 during the holidaysfor the Rescue Red but they typically sell for under $90) and you can often find various versions on sale on Amazon by Amazon or third party fulfilled by Amazon as well.It's important to note that some people have received their G7900's in the tin G-Shock cases, I did not. Mine came in a black standard G-Shock cardboard box. The manual as usual with Casio G-Shock releases are quite thick, especially for this watch.There is really nothing negative that can be said about this watch. It's simple to set (if you are used to G-Shocks), otherwise you get a nice thick manual in various languages to peruse. The watch looks great, it is comfortable and Casio went all out in making sure that those who care about moon and tide displays get a cool watch. Also, the fact that you get the guards on the base of the straps is a plus. I have to say that while the Gulfman was created for the sea and has a pretty cool tide display, I prefer the Rescue Red over the Casio Gulfman in terms of aesthetics and also, it's a 20 bar watch, so you can go deep sea diving with it.I do recommend purchasing Vinylex Quick Wipes (or spray) to keep your G-Shocks protected (since Resin does tend to harden or crack if not cared for).But in the end, I have to give the Casio G-Shock Rescue Red G7900A-4 a pretty solid rating. For those looking for a red G-Shock, this is the best out there in my opinion. It's not too flash, it's stylish and cool. But most importantly, it has a lot of the features that make it a pretty awesome G-Shock.Highly recommended!"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"F***5"},"datePublished":"September 10, 2024","name":"An excellent G-Shock watch for \"Ocean Enthusiasts\"","reviewBody":"This is a truly gorgeous watch in the G-Shock line. As a guy that lives in a beach town, its \"G-LIDE\" functions were exactly what I was going for. And, as a former lifeguard (way, way back in college!), the \"Red Rescue\" variant was one that I definitely wanted to have. As a G-Shock, it sits at the upper-end of sizing but still less than some of the larger watches out there. So, how will it sit on your wrist? If you have a wrist sized at 7.25\" like mine, then the pics I've attached to my review will be exactly what you can expect. I find that it's truly a comfortable watch to wear and has some great features to it. Overall, it's definitely a win! I've put in why with my categories below.Comfort = 5/5Yep, it's truly a comfortable watch to wear. With my wrist sized right at 7.25\", it fits nicely in the 5th notch from the top of the watch (see the pic above). The flaps sitting just under the dial makes for an excellent fit on your wrist, too. That is a HUGE win when you're in the water. It just fits really well. Comparing it to my DW9052-2 (also reviewed on Amazon), I'd say that this is equal to comfort. I can (and have) slept with this watch on overnight and never had it feel uncomfortable at any time. The watch gives enough heft to let you know that you're wearing a watch BUT it never feels heavy.Appearance / Aesthetics = 5/5And, the watch just looks COOL! Yes, it really does! When you match it up with its \"Rescue\" features, you feel that it has the DNA of a lifeguard. The red primary color with the black buttons makes it an attractive watch that never feels overdone. The white lettering is a nice touch, too. Casio could've just made the letters black but the tri-color design truly works.Functionality = 5/5Considering its \"G-LIDE\" functions and G-Shock's usual countdown timer, 2 stopwatches, alarm, and World Time features, this is truly a winner. I found the setting of the watch to be easy, even plugging in the Tide and Lunar cycle information. The instructions show you how to plug in values with tables at the end of the booklet. However, to be truly accurate on your Tide and Lunar Cycle (e.g., Lunitide) information, I recommend consulting a dedicated resource on the Internet. I used a combination of info on 2 websites (tideschart.com, surf-forecast.com), a Lunitidal Interval calculator (lunitidal-interval.com), and an iPhone app that I bought to bring the most accurate info together on the watch. It asks for your Longitudinal and Interval info when you set up the watch. And, it's easy enough to change when you visit different coasts. The backlighting works very well and all of the buttons are easy to push and responsive.Transaction Experience = 5/5Amazon's Seller, \"The Watch Locker\", came through quite well with this purchase. They walked away with a 5-star rating from me for their delivery of the watch (right on their promised timeline), the condition that the watch arrived in (new in the box with all of the original packaging), and the watch is an authentic G-Shock (verified personally). The price of the watch was definitely competitive and worth every penny.Overall, this watch is an excellent addition to the G-Shock line and I am personally very pleased to have it in my collection. I also have the black version of the \"Rescue\" line which also comes away with an identical assessment to the red. However, if I had to choose between the two of them, the red one comes away as my favorite because, IMO, it truly comes away with the feeling that it's a \"Sea Worthy\" rescue watch.TIDAL ACCURACY UPDATEAfter wearing this and my black Rescue watch for several days, I found the tidal indicator to be inaccurate with my locally-verified Lunitidal values. However, I found the \"secret\" to getting the tidal bar to be completely accurate. After calculating your Lunitidal Interval, add 7 hours to your value in the watch and your tidal graph should now be accurate. My watch has been completely accurate for the last 2 days. So, an example is where your Interval is set to 2:26, you would add 7 hours to that for a new value of 9:26. I hope this helps any of you that noticed the same inaccurate tidal graph reading."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":5,"bestRating":5,"ratingCount":2}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"how big is this watch, i.e. how many millimeters?","acceptedAnswer":{"@type":"Answer","text":"52mm diameter Case Thickness \t17 millimeters"}},{"@type":"Question","name":"I know the dimensions, but does it appear \"too big\" for an 11-year old boy's wrist? He's athletic and we want to get him a watch for his birthday.","acceptedAnswer":{"@type":"Answer","text":"The G7900, while fairly large, has wings under the strap that make it fit nicely on smaller wrists. This means that it will likely fit better on a smaller wrist than similarly-sized G-Shocks that don't have the wings under the strap.I bought a G7900A-4 for my nephew recently. I was so impressed with the styling and the bright red color that I ended up buying another one for myself. Of all the watches I have -- and I have more than I need -- this one attracts the most attention. People who don't even notice my other watches definitely notice this one. The bright red color is hard to ignore.I think an 11-year old would be thrilled to get this watch, and will likely be the envy of his friends."}},{"@type":"Question","name":"is there a smaller size?","acceptedAnswer":{"@type":"Answer","text":"We at us legend inc would like to thank you for your email.We believe the Casio g shock G7900 series comes one size only (large)We would like to thank you for shopping on Amazon.Us legend inc customer service"}},{"@type":"Question","name":"Is this a legit casio g-shock? or is it like a replica? i gotta make sure i'm not buying the replica one, i don't want to make that mistake again.","acceptedAnswer":{"@type":"Answer","text":"There are certain specific markings on a watch manufactured by Casio. However to be one hundred percent sure that you did purchase a Casio product you would have to mail it in to Casio’s factory service center in order to confirm that the watch was manufactured by Casio."}}]}]}
