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on February 1, 2016
The direct descendent of the original Casio G-Shock that was released in 1983 is the GW-5000, which is available as an import from Japan. This GW-M5610 is a first cousin of that pricier watch and it carries on the tradition of tough square G-Shocks. What you lose from the GW-5000 is the stainless steel case with a screwed-down back whereas the GW-M5610 has a resin case with a stainless steel back plate held down with four screws. Both watches have identical features including solar charging, atomic time synchronization, World Time, four daily alarms with snooze function, a countdown timer, a stopwatch, and electroluminescent illumination that can be automatically engaged with the movement of your wrist in a dark environment. The GW-M5610 gets a red surround and white, blue, and yellow writing on the face which makes it a little busier aesthetically than more monochromatic versions of the 5000 and 5600 series.

The first thing I noticed about the watch is how much smaller, thinner, and lighter it is compared to round G-Shock versions I own. It is an excellent choice to wear under long sleeves and jackets because it easily fits underneath them with minimal interference. I will be using this watch in the winter months for daily wear due to its sleek profile. The second thing of note is the crisp clarity of the numbers in the positive LCD screen. It surpasses my Casio Pro-Trek PRW-3500 in regards to off-axis legibility even though the Pro-Trek’s digits are 50% larger than the GW-M5610’s. I am really impressed with how good this watch’s display is.

I find the strap fits comfortably on my 7-1/2 inch wrist. The light weight makes me forget that I am even wearing a watch at all. Contrary to the dozens of complaints from previous owners here on Amazon, my auto backlight function works perfectly fine even though I leave it shut off in order to conserve power. My watch was manufactured on January 8, 2015 so maybe Casio has finally fixed the issue with faulty backlight switches. There are several one star reviews of this watch here because of this issue and I honestly cannot understand how one can downgrade the rating of the entire watch due to one feature that most G-Shock users end up turning off anyway. The auto backlight duration unfortunately is not adjustable like my Pro-Trek and Gulfmaster. I would prefer the ability to lengthen it from 1 second to 3, but this is a minor nit.

The function buttons are all recessed into a protective niche on the side of the case so pressing them only works for me when I use the tip of a fingernail. Action is positive and appropriate for the pressing force I apply. The World Time, stop watch, and timer functions all work like other Casio digital watches and are intuitively accessed with mode button. The one complaint I do have is that the volume of the alarm signal is very weak and probably would not wake a person from a deep sleep. If Amazon’s star rating system would allow it, I would subtract a half star for this and would suggest not relying on this watch for important wake-ups and instead using the alarm from dedicated alarm clock or smart phone. Note that this isn’t any different than the other Casio solar-charged watches, so it may be a function of reduced battery capacity.

My watch arrived from Amazon with the power reserve showing at the Medium level. I put it out in the sun for about 30 minutes and the reading went to High. I set my home city, clicked Daylight Savings Time to the automatic setting, and synched the watch to the atomic clock signal in Ft. Collins without any trouble. Each evening just after midnight it synchs automatically so the watch always has an accurate time reading. I’ve had no issues with not receiving the signal but then again I live in a state bordering Colorado and all my atomic watches synch each day without fail.

This watch is a great heir to the spirit of the original G-Shock. It wears small and comfortably on the wrist, is tough as nails, cost about one-third of what the GW-5000 does, has the accuracy of atomic synching, should run for a decade or more on the original solar battery (note that all solar watches will need to have the rechargeable battery replaced as some time in their lives), and has a very clear and legible display.

As a long-time G-Shock owner, I have previously been drawn to only the round case models. I find it remarkable that after finally taking the plunge with this square case GW-M5610 that I have been absolutely delighted by this watch. It’s certainly not very flashy and has a nerdy charm of its own. No one in going to compliment you on it, but that’s all part of the fun of being a G-Shock fan. I now regret taking so long to come around to the Square Side and can recommend this watch most highly.
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on March 14, 2013
I spent weeks looking for a watch that wasn't too flashy, too bulky, or uncomfortable. And, I wanted something that will last. Well I found it. This watch is super lightweight, has a very slim profile, and is packed full of features. I have a small wrist, so I needed a watch smaller than the large G-Shocks.

Even being small in size, this watch still stands up to the larger G-Shocks, in strength and features. It is atomic, so you never have to worry about the time being off. Syncs even on my nightstand. This was one of the deciding factors for me because I don't like having to check and see if my watch is correct. Casio claims that this watch won't ever be off more than a second, if it is synced periodically. Oh yeah, and it's solar powered!

Another reason I got this watch is because it doesn't have very many exposed metal pieces. I wash cars for a dealership, and I can't have a metal watch that will scratch cars.

One of the big decisions I had to make while I was searching for a watch was do I want a negative display? And truthfully, I still don't know. This display doesn't disappoint. It is crisp, and easy to read in all light conditions, even dark at night under street lamps. My conclusion, I love it. But, someday I would like to try a negative display.

Overall, this watch beats every other watch I've looked at. It has all the features I was looking for and more. This watch is worth twice what it retails at. It looks great and just works.
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on January 10, 2017
What a great watch! I had my first G shock for a month (will be returning it) and it's the GW6900 also a solar atomic and my first G shock.

I am tired of replacing a watch band it battery every year on my Timex expedition watches! At 50 years old that comes round pretty fast and it's annoying for sure. I always turned my nose up at shock watched due to the rather overbearing look and bold "in your face" kind of appearance. I don't know why, but I began to include them in my hunt the past few months. Only then did I learn there are reasons why these are popular and that the g shock name isn't just a bumper sticker logo to get your attention. It means "gravity shock"....and it means they are tough.
Read the story of a normal guy who worked for Casio and was tired of dropping watches and have them break; and how he began making a tougher watch and unofficially testing them by throwing out a window a few stories high from his desk. HEY! This guy gets it! That's when I was sold.

I picked the 6900 because Kohl's had a sale and my wife works magic with Kohl's cash and such. It is a great watch and I have no complaints. But, even with that on my wrist I kept googling images and reviews of this 5610....And learned it is an updated version of the original g shock that guy from Casio invented in 1983 or so. Now that is something I can get behind and I don't lose any featured from my 6900 and gain a bit of crispness and thinness as well. Yeah, I am really liking this watch. The soalr charging keeps them darn battery replacement costs and stops from coming like it's a season in my life, and the toughness keeps my band in tact longer (to be determined of course).

Also, AMAZON sent this watch FULLY charged and set perfectly for my needs. Living in Rochester NY can make the complete charging if the watch a challenge in the winter months like now so I appreciate the attention to detail with the charging. Of course this is a Prime item do I ordered it on a Friday and was wearing it on Sunday! Yeah that's right; a US mail truck pulled into my driveway and handed me a package before noon on a Sunday. How cool is that? And hands down this was the best price available and beat many stores by $30 or more.

Who figured a watch would be so involved in my head with batteries and bands and not being able to find sn exact replacement when something failed every year or so? Well no more. No batteries, and the bands are available and reasonably priced. Somehow it feels different already and if down the road I need a replacement band it already has a different taste; much like replacing a wear item on a great motorcycle it ATV that you have. It's okay!
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on February 28, 2017
If your interested in a no flash, timeless, simplistic design then this watch is for you. This G-Shock is a step up from Casio classic DW-6500. It add solar charging, world time, 5 alarms, and the ability to sync with 6 different stations around the world.

As a fan of Casio's Square G-Shocks this one in particular is one of my favs. It keeps that classic look and durability while improving on it.
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on February 16, 2017
Overall, I really like this watch. I have used mostly the timex ironman line, but wanted to check out a Casio g-shock. I love the solar charging capability, which works well thus far. Had medium charge at first, but now constantly high charge after wearing for a day or two. Syncs to the atomic clock while on my wrist most nights, but hard to synchronize during the day due to poor reception. One syncs per day is more than enoug to be within 0.5 seconds of perfect. Auto illumination is functional, but not useful, in my opinion. My only suggestion for improvement would be a night mode feature like on a timex where you can set it such that the backlight illuminates with the push of any button, and that the backlight stay on longer. Doing something like setting the alarm in the dark is chalkengjng on this watch, but very easy on a timex ironman which does have a night mode feature. If it had night mode, I would give 6 out of 5 stars.
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on September 6, 2014
I have had this watch since April of 2014. I absolutely love it. It is smaller and slimmer than most G-Shocks and that is a large reason why I bought it. The numbers are crisp and clear and the information is displayed very nicely. It wears nice too and is very comfortable. I hardly ever take it off even while sleeping and I receive the atomic signal every night here in Memphis. The solar charging works fantastically. Full charge is achieved in five minutes under direct sunlight and it also charges indoors under fluorescent lighting albeit it takes eight hours to fully charge under indoor conditions. However, ever since two-three days after receiving it, the charge has never dropped below high and I make no special effort to charge it. The raised bevel definitely does what it is supposed to do. I have banged it around at work and while hunting and fishing and there is yet to be a scratch on the mineral glass, which is scratch resistant as it is.
My auto EL works fine although it is a little finicky. The watch must be tilted in just the right way. The photocell in the watch determines if the ambient light is low enough to activate the auto EL. I turned mine off because it would come on even when I didn't need it to and the EL backlight will drain the battery if used too much. The functions are simple to use once you get the hang of each mode. The alarm probably isn't loud enough to wake you from a deep slumber but is definitely loud enough to be heard during the day while you're awake. It also has a power saving mode that turns off the display during the night if the watch is not moved.
As I said before I love my G-Shock GWM5610. It definitely inspires confidence that my time is always accurate and my battery will never run out. Also, it is essentially identical to the DW5000, the first G-Shock ever released back in 1983. It's a pretty cool homage to the legendary classic. My brother liked mine so much he got the exact same 5610 for his high school graduation and I just bought my wife a Baby-G. As far as functionality, style, ruggedness, and craftsmanship, there is not other comparable brand on the market in my opinion. There is a reason many military, police, and outdoorsmen choose G-Shock. I will be a G-Shock fan for life as I am pretty sure thats how long my 5610 will last.
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on September 6, 2016
this watch is amazing. It's solar powered so you don't need to charge it, and it syncs with the satellite so you don't need to adjust the time and date. Additionally from personal experience I can vouch for its durability. I accidently left it on top of my dirty clothes and threw it into my laundry bag to wash. I found it after it went through the washing machine on perm press hot water and the drying machine on perm press(pretty hot). The watch had a black screen and I was scared sh**less. But after waiting a couple of minutes the screen blackness disappeared and the watch worked again, the battery was scorching hot. But all is well and I knew I had to let others know that this watch is a lifetime buy (reddit BIFL material.)

-super durable heat, shock, water(swimming pool),
-don't need to adjust time/date ever
-looks classy compared to the usual circular g shocks

-if you have greasy or oily skin, it might get on the watch straps, but it's easy to clean
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on July 24, 2015
After about 20 days, the watch eventually reached to my hands. All the function is worked well, except the auto EL backlight. This is my first order in Amazon, which really dispointed me!! Also, the Tilt senor was tested ,but no readback was shown in the screen whenever in daylight or dark place.What's more, it is hard for me to return it for another one, because I bought oversea, I am in china!!!!!!
If you really care about the Auto EL backlight, don't buy it!
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on August 4, 2016
Simple, simple and simple.

It looks simple. Just the look of a watch. With time and dates.
It lives simple. You don't have to ever worry about the battery. It's tough. Only a bullet may destroy it.
It is low profile. Loaded with features at such a price.

Updated Nov 2017: Going strong! Love it! Never had a problem with it!
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on October 7, 2017
Wear it at my work place everyday. Beeps aren't annoying or loud to disturb anyone. Battery is always on high. The motion tilt illuminate function works everytime but only in the dark. Just move your arm and look at it, lights up long enough to see the time. Strap isn't too comfortable but I got a mod for it that can make the lugs 16mm to 20mm and I'm adding a nyon zulu/nato strap. Very crisp display. never take it off I always have it on great never has problems in the cold showers, summer 112F heat, golfing, skateboarding, swimming, or clapping. Great watch
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