- Auto light feature will not work if the battery level falls below Medium (marked as M on the face of the watch).
- Turn on or off the auto light function by holding down the light button and turn wrist at a 40 degree angle towards the user in a dark environment
- Casual solar-powered watch with multiple functions including multi-band atomic timekeeping, shock resistance, EL backlight, world time (29 time zones, 48 cities), city code display, five daily alarms, 1/100-second stopwatch, countdown timer, full auto-calendar, battery indicator, and power-saving function
- Approximate battery life: 10 months on full charge (without further exposure to light)
- Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving
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This model possesses Tough Solar and Multi-band 6 Atomic Timekeeping technology housed within an even slim profile octagonal case. Non-Stop Tough Solar Power provides energy via a small solar panel combined with a large-capacity rechargeable battery that enables a variety of energy-hungry functions to operate smoothly. Black resin band digital watch with neutral face.
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.
- Product Dimensions: 4 x 2 x 2 inches
- Shipping Weight: 7.2 ounces (View shipping rates and policies)
- Origin: Thailand
- ASIN: B007RWZHXO
- Item model number: GWM5610-1
- Batteries: 1 Nonstandard Battery batteries required. (included)
- Date first available at Amazon.com: May 2, 2012
- Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
- International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
- Average Customer Review:
|Brand, Seller, or Collection Name||Casio|
|Dial window material type||Mineral|
|Case diameter||46.7 millimeters|
|Case Thickness||43.2 millimeters|
|Band length||Mens Standard|
|Band width||12.7 millimeters|
|Calendar||Day Date And Month|
|Special features||Shock resistant, Luminous, World time|
|Water resistant depth||660 Feet|
Top Customer Reviews
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.
I'm usually not a fan of big and bulky watches due to having a small (157 mm circumference) wrist. Complicated-looking watches with features/dials/gauges are just silly, especially if they are features I would never use. After owning the GW3000, I really like the atomic solar feature. There are a few other atomic solar G-Shocks on Amazon that are slightly less expensive, but these are the reasons why I chose the GWM5610-1.
Compared to the DW5600, this GWM5610 costs more than twice as much, but I think the GWM5610 is indeed twice as good. As long as you have atomic clock signal reception, you never have to set the time. You can set a second time zone for the world clock. It is not half the weight, nor is twice as durable, but these might be the only areas that the watch is not twice as good as the DW5600.
Setting its time zone was far easier than with the GW3000 due to having a digital display and not having arms which are used to indicate settings and times. With regards to DST selection, this watch allows you to choose between automatic/on/off. Therefore, if you live in Arizona where half the year we are with Mountain Standard and the rest with Pacific Standard, you will have no problems with the GWM5610. Contrary, The GW3000 does not allow you to choose the DST mode, and it automatically selects the DST mode based on the time zone you select. Thus, with the GW3000, I have to change the time zone between LAX and DEN twice a year. Annoyance.
I have not attempted, and I may end up not trying, but because the bezel of this GWM5610 appears identical to the DW5600's, I believe the bezel can be removed and "stealthed." I will probably wear it for a few days and decide if I like it the way it is, or go ahead and stealth it. I think the different colors on the face of the watch complement each other well, and it might look better as is.
Eventually, I may replace the DW5600 with this watch as my work watch. Working in an occupation that requires accurate time for record keeping, the atomic feature would be nice to have. At the moment, readjusting the time on the DW5600 once every other month or so is not a big issue. Perhaps, when the DW5600 breaks (if it ever would), I would replace it with another GWM5610.
There is one issue, and it may be a big issue for you. This watch has an automatic backlight feature that turns the backlight on when in a dark room and when the watch face is tilted from a horizontal position to a minimum of 40 degrees upward (as if you're bringing the watch to your face). The feature is called Auto EL, and it can be turned on and off.
Apparently, many GWM5610 come with defective Auto EL from the factory. You probably saw many reviewers and product question stating this. Many have returned their watch to Amazon only to get another defective watch. These defective units are sold at retailers other than Amazon as well.
My watch is indeed defective. I confirmed this by making sure the watch was charged, and then putting the watch in the tilt sensor test mode (by pressing the A, B, and C buttons simultaneously), and noting that the watch did not sense me tilting it. It will display "8888" if it senses that there is tilting occurring.
I wasn't planning on using the Auto EL feature. I believe I had an old watch decades ago that had this feature, and I didn't find it particularly useful. If the feature was working, I may find it useful at work at night when I'm unable to touch my watch with my fingers. Considering that the watch is solar, battery life is not a concern either. It's pretty cool, again, if it was working.
I don't think I will be asking for a replacement. I am cutting it close to my trip, and may not have enough time to receive a replacement from Amazon. Seeing how many people have received defective watches from recent purchases dating back a few years, I feel that I might get a defective replacement anyway.
Because I'm not horribly heartbroken that the Auto EL does not work, I'm only deducting one star from the review. Again, you may feel that this is a deal breaker.
My review for the GW3000BB-1A: http://www.amazon.com/review/R3EWELTCRE08Y5/ref=cm_cr_rdp_perm?ie=UTF8&ASIN=B004YZIBSK
Amazon's GW3000BB-1A product page: http://amzn.com/B004YZIBSK
Amazon's DW5600E-1V product page: http://amzn.com/B000GAYQKY
Update on 2015/07/17 at 18:39 Arizona Standard Time
Star rating changed from 4 stars to 3 due to receiving three defective watches. I won't be asking for another replacement. I guess I wasn't meant to have Auto EL.
I had read some reviews that had concern for the solar battery life, and having worn this for the past 2 months, I can say i've had no battery issues and have had to make no special arrangements to make certain it is charged. It's chilly here, so i'm often wearing a coat outside and a jacket at my desk, but the watch still indicates that the battery charge is "high".
The multiband-6 timekeeping is revolutionary, to me at least. I work in an IT environment, and it's helpful to know that my watch is in sync with all of my servers that use NTP (which distributes atomic level timekeeping over IP networks). I love knowing that even though i haven't had to dial WWV in Colorado (or listen to them on shortwave) to check my watch time, it's perfectly in sync, or reasonably so even if it hasn't synced that morning.
That said, I don't get perfect reception of the signal in my house. It seems to do better in some positions and some rooms better than others. That means that if it lays on its face on my nighstand, or falls on the floor, it might not get the sync signal. You might also have problems in hotel rooms.
The other feature of casio watches that i really appreciate is the World Time reading. I routinely work with teams across the globe, and it's handy to just press 1 button twice on my watch to see the date / time in their zone.
Overall, if you're looking for a casual but feature filled daily-wearer, this is an excellent choice. I have even been known to use it to time my coffee / tea brewing.