Casio G-Shock GWM5610-1 Men’s Solar Black Resin Sport Watch

I am writing less than 24 hours after purchase. This is the smallest form factor of any G-Shock I own. I have multiple and varied solar atomic Casio watches on a windowsill that are all charging and receiving the signal daily. All have worked flawlessly (forever). This one I purchased from Amazon had a fully charged battery, the correct hour, correct minute, correct second, day and date right out of the box. I refer to this watch as being “perfect”. Why? Because you never have to set the correct time/date information, and you never need to have the battery replaced. Just put it on your wrist and go.This is not a luxury or prestige looking watch. In fact, it looks like a plain, ordinary G-Shock. This is not a statement or bling watch. Only if you tell people that it is special and perfect will they know. So, this is a perfect stealth watch at a very affordable price.

This watch is perfect. Always on time due to Multiband 6, always charged due to solar power. Can survive being ran over or thrown off a 3 story building. Easy to read watch, with the standard useful features. Looks great even on my small wrist.

Background: I recently retired. Had worn a Citizen Chrono-Perpetual ecodrive for many years at the office.Had worn a G-Shock module 2747 for the past 14 years out of the office. I really appreciate the solar power and automatic time update features of the Citizen. I love to spend time outdoors and also hobby building wooden furniture and other carpentry projects. 14 years was pushing the battery of my 10 year G-Shock. Waking up inside a sleeping bag in the middle of a pitch dark night makes one appreciate Casio illumination. The old G-Shock was OK but not great.The 5610 has all the features that I wanted: Solar Power, Radio wave time synchronization, the digital face that I came to love years ago, a gentle conservative size, a scratch resistant crystal, unobtrusive setting buttons, Casio’s great organization of the controls, and the wonderful ability to take a hard beating and keep on ticking (yeah, I know they don’t tick anymore).The negatives are fairly trivial: I’ve worn the watch for 3 days now and the atomic function hasn’t worked. So I manually set the DST to “summer” and the watch reads correctly. Once I get a few weeks wearing the watch and figure everything out, I will set it to “auto” and see what happens. Will leave it upstairs against a west window and let nature take its coarse. The digital numerals are criticized by some as being too small. I am just fine with the way they are now. NO SMALLER! I hate the silicone watch band. Will try to wear this for a couple of weeks to make it work. All of my other watches throughout the years have been with velcro bands. They just work so much better: they are light, accurate, easy to use, and they can be used in almost every application. i will switch to VELCRO watchband soon, in all probability. In fact, I already have one ordered.there you have it. I almost never use the timing functions so won’t go into that.Will update throughout the years of ownership.

I now wear a watch on each arm! One is an Apple Watch 7 that I bought thinking it would be the last watch I’d ever need. While the Apple watch is great for many things, two or those things are not battery life and constant second-hand readability. The Casio G-Shock GW-M5610U is never dead, never has to “wake up”, and I can always see the seconds “hand”. This is great for anyone who likes to set the time on their coffee pot, car stereo, etc… as near to exact time as possible. I also like knowing that even if I forget to charge my Apple Watch or if it dies during the day, the G-SHOCK on my other wrist will have my back. I know Casio is now making sort of “smart-watches” with bluetooth and all that but it’s nice to have a “dumb-watch” that just works and doesn’t need any other devices to enable all its features. Honestly, when/if my Apple watch gets to the point where it won’t hold a charge or I break it somehow, I don’t think I’ll get another one. I’m sticking with a solar-atomic G-SHOCK from now on. I just use the Apple Watch mainly to track my fitness now.

Camd on good shape. Full charge. Last auto sync was June 2. Just had to set time zone and dst

There is a reason they don’t upgrade this design. It’s timeless. This is my work watch. Time, Date, Day of the week, light, alarms, lightweight. This is a staple G-Shock. I love my GG1000 and my Applewatch and I have room for both in my life. But this is my new daily driver. If it breaks or gets damaged or scratched, I am not out a lot of money.

There are a ton of reviews and tutorials available for this watch so this will be brief.Yes, this is the updated 5610U with the 3495 module. Only in America is it still being sold as 5610-1.This leads to confusion, but the reality is the “updated” version has been shipping for about a year.The updates are fantastic. This really feels like the ultimate G-shock square. It’s a few mm smaller than the 5600’s which means it fits my 7″ skinny wrist perfectly.Only negative is that if you’re buying this watch for alarm features- don’t. It’s so quiet as to be useless. This is well documented in other reviews, and I can confirm.There are also a lot of complaints on the light which switched from the blue glowing back panel (Electro Luminescence or E.L.) to a side mounted LED. I don’t see the problem. It works fine and because of its energy efficiency the auto light (light turns on if you flip your wrist to look at your watch in low light conditions) can stay on all the time (previous version with old backlight turned it off after 6 hours-annoying).If you are looking for a G-Shock in an un-obnoxious size with solar, atomic time, WT etc. all under $100- this is the watch.

First off, I love this watch. I wear it almost every day. I’ve swam in lakes with it, travelled with it, gone to sports events with it…it’s a perfect throw-on-and-forget-about-it watch. It’s rugged, well-built, and just works.But just be warned: this product does not come with the iconic hexagon tin. Every product review I’ve seen of this watch shows the tin, and it would’ve been cool to have. But this one just comes in a flimsy Casio-brand cardboard box with the plastic display holder. Not a total-letdown, because the watch is still phenomenal, but a slight bummer.

The order shows Casio G-Shock GWM5610-1, but the watch back shows GW-M5610U. Sold by Amazon. Sold as new and received in new condition.SUMMARY: I have given the watch a rating of 5 because it does what is stated in the manual (qw3495.pdf, on the Casio site). The watch is not entirely satisfactory for me; I assumed more alarm capability than this watch has.PRO: Shock and water resistant. Light button recessed. Solar power. Time setting automatic. Resin band comfortable and easy to clean. Watch has 5 alarms.CON: Watch could snag on things. Numerous button presses may be required for settings. Gaskets should be replaced every 2-3 years. Significant unobstructed bright-light time needed to keep the battery charged. Alarms daily only; cannot be set for a specific date. Band durability uncertain.Shape and Appearance: The watch face looks nice and practical. The watch is rather wide. The watch is thick, but the design makes the thickness less noticeable. The watch is large and somewhat angular, so it could snag on things. The width, thickness, and angularity probably improve shock absorption.Buttons: The buttons are slightly recessed, which is good.(I want to conserve battery power, so I don’t want to turn on the light accidentally, for example while putting on clothing or putting my hand in a pocket.)Because the watch has only 4 buttons, entering settings and alarm times can require a number of button presses.(I previously owned Casio calculator/databank/alarm watches that use 8 buttons to control settings, including the reverse, forward, 0, and PM buttons, and use the numeric keypad for setting times and dates.)Water Resistance: Having only 4 buttons makes water resistance more practical. The gaskets are supposed to be replaced every 2-3 years, maybe by an authorized CASIO service center.(I doubt that I will bother to have the gaskets replaced. My Casio calculator/databank/alarm watches have not been water resistant, presumably because of their numeric keypads. My most recent DBC-32 watch probably stopped working after 7 years because I had washed the watch many times — my mistake.)Solar power: Powering the solar cells requires a lot of bright-light time, from my point of view. When the watch is charging, no part of the watch face should be covered, for example, by a shirt sleeve.(I usually don’t spend a lot of time outdoors, so I occasionally prop the watch on a windowsill, with the help of the plastic stand on which the watch is shipped. The solar cell requirements are detailed in the manual.)Band: I think the resin band is comfortable, and it stays clean. Metal straps would yank on my arm hairs. Unbuckling the wrist strap is easier because the metal prong has enough weight and free motion that the prong can fall out of the way when it is pulled out of a hole in the strap. The manual says that the strap should be fastened loosely enough that you can insert a finger under the strap, but photos show that many users fasten their straps tightly. The keeper (the resin loop that holds the free end of one strap against the other strap) contains a cutout slot. When I slide the keeper over the free end, it sometimes snags on that slot. I hope that Casio will remove the slot or make it short enough to prevent snagging.(I have used Casio watches for 40 years. The resin straps have broken on the majority of those watches. I have been careful to limit bending and pulling on the straps of my most recent calculator/databank/alarm watch, especially when putting the watch on and taking it off, so there is no sign of cracking after 7 years. I cut off most of the bump on the free end of the strap, to reduce stress on the keeper. I don’t know if Casio has improved the band durability. I think the bands ideally would consist of nylon or Kevlar fibers running lengthwise, covered by resin.)Alarms: Although the watch has 5 alarms, I can specify only hours and minutes, not months and days. In other words, the watch only has daily alarms, not yearly alarms.(I need to be able to set each alarm for any particular minute during the next year. Again, I should have read the manual before buying.)Automatic Time Setting: This feature works for me; it is impressive. After automatic time setting, any discrepancy between the watch time and time.gov appears to be less than 0.1 second.

This is one of the best G-Shocks ever made. I highly recommend this watch to everyone.First of all, a few things need to be mentioned.(1) This product’s title says it is the old version of this watch, which is GWM5610-1. However, as of 12/6/2022 what you get in the mail is the updated version of this watch, which is GWM5610U-1 with the updated module 3495. You can verify this with the photos I have attached with my review. This is definitely a pleasant surprise and a great thing in my opinion. The updated module 3495 brings some great functionalities compared to the old one, while retaining all the good things about the old one. There are plenty of videos, articles, and reviews under this very own product going into detail about what are the new features that come with the module 3495. Therefore, I’m not going to talk much about it.(2) As I mentioned above, this watch comes with the updated module 3495. As you can see in my photos, it no longer has the old Electro-Luminescent Backlight system. Instead, this new module has a nice clean white LED backlight, which looks super clean in my opinion.Also, the Automatic Light (LT) function works perfectly when you’re in dark conditions.(3) The watch I had before this was the GW-M5610-1BJF, which is the darker cousin of this watch with the negative display. I bought that watch thinking the negative display is so much cooler than the positive display of this watch. Soon after I got that watch, I realized how difficult it is to read that negative display. Unless you’re looking at it at the perfect angle and under bright lighting, it is really difficult to read that display. So, I ended up returning that and buying this watch for even cheaper around $80. The moment I picked up this watch I realized how crystal clear the display of this watch is. I have no problem reading the display at a quick glance even under very dim lighting without the backlighting. If you’ve turned on the auto backlight (LT) function or manually press the “light” button, you’ll never have trouble reading the time on this amazing display.(4) As I mentioned above, I initially went with the GW-M5610-1BJF instead of this watch, thinking this watch doesn’t look that exciting and cool compared to the GW-M5610-1BJF with the negative display. But very soon I realized that I was completely wrong. The photos you see of this watch don’t do justice to its absolute beauty. I wasn’t sure if I was gonna like the red color line that goes around the display at the time of purchasing this watch. But as soon as I opened the box and picked it up, I immediately fell in love with it. This watch looks fantastic in person. If you’re hesitant to buy this watch because of the terrible photos attached by the seller under this listing, I guarantee you that this is gonna look fantastic in person.In conclusion, I highly recommend this to everyone. It’s hard not to love this watch no matter who you are. If you’re a G-Shock square fan like myself, then you’ve got no excuse to not own one of these. I tried my best to attach clearer, unedited photos of the watch with my review, so that you can see its beauty under regular lighting in real life. I hope it helps. Believe me, you’re going to love this watch. It’s impossible not to fall in love with this. 🙂

Love this G-Shock! The GW-M5610 has been a favorite of mine for years. The version now being sold at the time of this writing (August, 2022) is a new model which “silently” replaced the old GW-M5610 and bears the model number GW-M5610U-1CF.Let’s start with a summary of the differences between the old and new models:The old model had a module number of 3159, the new model bears the module number 3495.NOTE: As it stands now (August 3, 2022), Amazon has a “Product Documentation” link on the listing for this watch. Please be aware that the documentation is for the OLD model (module 3159) and NOT for the current shipping model (module 3495). My suggestion would be to navigate to the Casio website for the correct documentation.The electroluminescent (EL) backlight is now replaced by an LED light. Benefits: EL panels wear out over time. Whether this is going to be a problem to a user over the lifetime of the watch I don’t know, but the LED does not have this issue. Also, the LED is significantly brighter, and the nice white light makes for a much more legible display at night.The new model allows you to select a duration of 1.5 seconds or 3 seconds for the LED light.Timer: The old model allowed setting of the timer in one minute increments. The new model allows setting of one second increments. For example, you could set a timer to 5 minutes and 15 seconds now which was not possible previously.Time display in inset window: In stopwatch and timer modes, the small inset window in the upper left corner now displays the time (hours and minutes). This allows you to see the current time without having to leave the timer or stopwatch display.Month and day display: The user can now choose to display Month.Day or Day.Month format. People outside of the US will appreciate this feature.Time zones: More time zones are available than previously.Button operation: Getting to some of the less used functions used to be a pain to remember what buttons to press. The operations needed to access those functions now seem to be much more intuitive, basically using the same button to cycle through all of those operations.Those are the main differences as best as I can recall. There may be one or two I’ve missed.General Operation and Comparison to Casio Bluetooth Models=================================================Some of the Casio models now have Bluetooth connectivity to a smart phone. I own one of those models so I can comment on my personal likes and dislikes of those models compared to this model. First, I have found that most of the features provided by the Bluetooth connectivity don’t really interest me too much. I’m also not a fan of the fact that some of those features are not accessible directly from the watch at all. However, I did really like the fact that those watches can sync not only from the atomic time radio signal, but also via a Bluetooth connection to your phone. On the downside, they have taken away the ability to see from the watch when the last successful sync occurred. To see this, you must use the smartphone app, and even then, it will only tell you when the last successful sync was via Bluetooth, not via the radio signal.I also like the fact that the display on this model displays bars at the very bottom of the screen to indicate when the hourly chime is active, whether any alarms are active, including a separate indicator for the snooze alarm, and a battery level indicator. On the Bluetooth models this is missing, and the only way to see the battery level is from the smartphone app.One final small detail, but this one drives me nuts: On the Bluetooth models, the indicators at the top left of the screen are so high up near the top of the screen that the structure above the LCD display (the solar panel) actually casts a shadow on those indicators making them almost impossible to read unless you angle the watch so that light is hitting the watch from an angle toward the front of the watch. The model I am reviewing here does NOT have that problem, and neither did the original GW-M5610.Conclusion==========I’m sure that there will be people with different opinions, however, for me, this watch carries forward all the features that I have always loved about the GW-M5610 plus all the enhancements that I like from the Bluetooth models (better light, time display in the inset window, one second increments for setting the timer, etc.) but it leaves off the Bluetooth features that I really don’t care about. In all the many years that I have been a fan of Casio G-Shock watches, this is by far my favorite in the entire lineup. The only thing that I could wish for in the future is that Casio would release an all metal version of the same watch. In the meantime, there are third-party metal cases and bracelets that are available for this watch which are extremely easy to install in place of the current case and band.

The watch I received (sometimes Amazon will group reviews with the wrong product IME): Casio G-Shock GWM5610-1I’ve had this watch for about a week, I’ll update this review if anything changes.I have worn a digital watch since I was five years old, so I feel confident in saying this is a really great watch, and a good value. I have worn a mix of Timex and Casio watches, but this is only my second G-Shock, the first being the DW9052.Summary:Great watch for the price (you get a lot of features and good build quality for ~$100.Pros:- Good build quality- Cool, retro design (might be a con for some)- Big numbers for time- Multiband 6 (never set your watch again)- Solar charging- World Time- Electroluminescent Display (EL)- Auto ELCons:- The buttons are sometimes hard to press and I am worried they might become even more difficult to push after using the watch for several years.- The EL backlight does not stay on long enough (fixed in the GWM5610U)- The Auto EL feature does not work all the time.- The current time is not shown when in the stopwatch or timer feature.- The watchstrap is not very comfortable and feels rather cheap.The Design:The watch looks as it does in the picture. Everything is intuitively laid out and you will either love the design or hate it. If you are into the classic Casio watch look, you will love it. Some also say the red line around the display took some time to get used to, but I loved it as soon as I put it on my wrist. The screen is easy to read and the time is BIG so you can read it at a glance (a problem I had on the DW9052). The frame feels solid, as does the mineral glass.The Interface:Using the watch is easy and simple. I always like to read the manual, but you can get along without it. I would suggest reading it though to learn how to set your timezone for the Multiband feature.The Features:Speaking of the Multiband feature, it is very convenient and reliable. I live in San Diego County near the coast and wear the watch to sleep. Each morning I check the display to find the watch has synced with WWVB successfully. Your mileage may vary though, as I have read that some have had difficulty getting a clear signal.The “Tough Solar” feature is also very nice to have. When I received the watch it was on the “M” battery level. It took quite a bit of sunlight to get it to “H”, but after leaving it in sunlight for a couple hours, I got a good three days of “H” level charge. Although, I have read that it can stay on “M” for six months without issue. I would suggest that after receiving your watch to leave it in direct sunlight for around four to six hours for two days. That should give you enough charge for a while. After that, just wear it and you should be good.The Electroluminescent (EL) backlight is nice and the auto feature is cool too, but it does not always turn on automatically when I turn the watch towards me. I wish that the backlight lasted three or so seconds instead of 1.5, but it works well enough.Note: I have read in other reviews that some people got the newer variant of this watch, the 5610U which does not have an EL backlight, but an LED instead. This one allows you to change the duration to three seconds, but it does not have that warm teal glow of the EL backlight.The timer, alarms and stopwatches all work as one would expect. It has one countdown timer, one stopwatch and five alarms. Coming from my previous watches, I found the snooze alarm (the fifth one) to be neat, but I do not use it. The countdown timer and stopwatch work well and the stopwatch has split functionality too. I just use it to time my morning runs. I would like to note that the time does not show up in the corner of the screen when using the stopwatch and timer as it did on my last two Casio watches. The 5610U has this feature.The world time browser is nice too, and one of the reasons I liked this watch over the 9052. It works as expected and allows you to change the DST status of the zone if Multiband is not working or if that timezone does not honour DST after 2009. Some have noted that you can only go West to East in the browser, not the other way. This does not bother me too much, as it allows me to use the button that would be used for that for the EL functionality.The Watchband (watchstrap):This is one of the main downsides for this watch, I wore the resin strap on the AE1200 for several years with no issues, but this one I had to change after less than a week. It just wasn’t very comfortable and I always found myself adjusting it on my wrist. For some people, this may not be an issue, but for others they will have to get another watchband. I swapped the one from my DW9052 (a nylon strap) and am really happy with the result.The Buttons:The buttons on this watch remind me of the buttons on my AE1200, except these are recessed and sometimes difficult to press. They are not too bad, but pressing them for a while wears down my fingers quickly. I am also deeply concerned that they will become nearly impossible to press over the next few years, as happened on my AE1200. I am hoping that them being recessed will prevent excess dirt and oil from getting in, but I much prefer the buttons on the DW9052, which have wide plates on them to aid in pushing them and keeping foreign materials out. I doubt most people will care about the buttons (especially given that Multiband 6 will mean you won’t need to set the time again) but it is something I care about.Overall:Despite the drawbacks enumerated above, this is the greatest watch I have owned. It is utilitarian in that it offers useful features and does not sacrifice too much (as many other watches seem to do). If the 5610U had an EL backlight though, I would go for that one.So should you buy this watch, if you are looking for a fashion piece, you should probably look elsewhere or consider a CasiOak watch (Analog-digital). If you want a watch that has most of these features (save the Multiband 6, Solar charging and “G-Shock” build quality), I would point you toward the AE1200, it will last a good three to four years and even more if you don’t press the buttons and will only cost around $20 or less. However, if you like the classic, square look and the solar and Multiband 6 feature, this watch is great.

For the past 10 years, I’ve thought that mechanical watches had so much charm and passion, while quartz watches were soulless devices. I picked up this watch to be a “beater” when my automatic watches weren’t suitable, but I’ve actually grown quite fond of the GW-M5610. What’s not to love about a light, small, tough-as-nails, super accurate, solar watch?I got this watch from Amazon on April 5, 2019 (in the USA). First thing I noticed was that it did not come in the hexagonal tin box that a lot of older online reviews show, but a flimsy cardboard box with a simple display holder. At first I was annoyed, but honestly the box would have just been tucked away in storage with other watch boxes that never see any use.After unboxing, you’ll find a warranty card, a handful of manuals in various languages, and the watch in a simple plastic bag (no protective stickers on the crystal or caseback, no fancy hangtags). I immediately checked out when the last sync time was (bottom right button), which happened to be on November 1. Assuming this sync happened before it was packaged up, that meant it was sitting for 5 months in the dark, but it still showed high power (as indicated at the bottom of the display, where there’s a L, M, H meter). Yay for power saving mode!Next step was to set the timezone. The manual states that the default timezone after losing all power is Tokyo. I assumed this was what the watch would be shipped with, but mine was set to NYC by default. I’m curious if watches sent to the USA are set this way, or if someone played around with this watch. After selecting my local timezone (Pacific), it was only 2 seconds slow! I know quartz watches are accurate but that is phenomenal, especially considering the manual states +/- 15 seconds per month without a signal calibration.Speaking of signal calibration, I’ve had my watch automatically sync about every other night in Seattle. I have an old Casio Waveceptor (10 years old) that never syncs anymore. I don’t know if that’s because it has become defective, or the GW-M5610 can pick up a weaker signal strength. Regardless, there’s no need to worry about missing a few nights in a row of syncing, as it’ll still be very accurate.The caseback on mine was machined and not stamped, with crisp engraving (FYI, I removed the serial number from the image, normally found on the bottom of the caseback). As far as I know, only older models will have the stamped, rounded version. While on the wrist, it feels just as comfortable as any rounded caseback I’ve had.I really like that the resin strap is already pre-rounded/pre-shaped. I’ve had tough, flat rubber/plastic/resin straps on other watches that were incredibly uncomfortable (I’m looking at you, SKX009). On my 6.25″ wrist, the watch strap keeper is right at the end, and there’s maybe 1/4″ excess strap sticking out. If your wrist is smaller, you’ll unfortunately have more strap sticking out, which will probably be a bit annoying.Other reviews state that the A-EL feature didn’t work on their watches, which is the auto-illumination when you tilt your wrist up. Mine works flawlessly. I’m curious if this was an issue with earlier models that has since been addressed.The only minor annoyance I can find with this watch is the non-standard lug width/strap. I think the stock strap fits it perfectly (both in terms of comfort and aesthetics) and have no desire to change it, but it’s proprietary. That being said, I’m sure it won’t be hard to find a replacement strap if needed.The GW-M5610 has a perfect blend of retro styling, useful functions, durability, comfort, and laziness (it sets itself!).

This model of G Shock is fantastic if you collect these Square models or want your first one, the look is criticized by some, the red stripe is meant to harken back to the original Square G Shock, some people dont like the look of the watch – but everything about this watch is fuctional….so that is that….its not really a watch for fashion type Casio people…this is a great EDC type of piece, a “one watch” piece more or less….I had standard model G Shock like this back in the 80’s/ early 90’s, primarily why I wanted this. I would probably say start out with the DW-5600 entry version if you have never had a Casio of this type before and want to get into one – its simpler, has the main features you need and nothing more, and its half the price on average of this Solar/ Atomic syncing model. But I am glad I got this version….If I had to grab one watch and only one….this would be the one – main reason – its slim but durable, light, and the solar battery means zero issues, water resistant for most average circumstances – example – you are going on a long trip, world travel, backpacking…this is a good solution…you just dont have to worry about it failing, running out of battery, etc. So, its is kind of worth the extra cost for the peace of mind, you will always have a watch. The World Time feature is great for travel – its always good to be able to track your home time or target destination time for planning and communicating with others back home, or for calling ahead to other destinations – you have to know business hours, best time to call etc….its a convenience thing – the watch has many time zones built in – so you just have to scroll thru and choose your 2nd time zone. The Multiband 6 (Atomic clock sync) is great – you know exactly what time it is…as long as you are synced up with a local frequency – the user manual talks alot about this topic – but you still can adjust the time manually – but once you are synced, the watch is supposed to be +- 15 seconds per month – better than most watches you could spend hundreds or thousands on. The watch attempts to sync up automatically each night….if you are within one of the 6 radio frequency ranges. The alarm is not that loud, but its functional. The countdown timer and stopwatch are there if you need those…standard more or less. Overall, this is a really intelligent purchase item, a great “one watch” if you just want a replacement timepiece and want one that does pretty much all you need a watch to do…and a little more. For G Shock collectors, you pretty much have to have a variation of this watch – its a classic. One nice detail also – the case back looks like a machined piece as opposed to stamped metal like the cheaper model and many other Casio models. The watch is slimmer and smaller than I expected – its understated and relatively compact compared to other large more recent Casio designs…..but, again, this is not a trendy bulky piece.Summary – if you are a world traveler, this watch would be a great choice. Or, if you want just one watch to serve you for the next several years, you wont need much more than this model of G Shock – you wont need a battery change for probably 10 years, maybe more….the one thing the manual does say and I dont see anyone talking about anywhere, if you are using the watch in water alot – you need to have it checked by a Casio approved technician/ shop every few years for seal replacement to ensure water resistance – the gaskets/ seals can wear out over time – I am sure this holds true for any G Shock or watch of this type.