The GW-M5610U-1 is Casio’s square 5600-series G-SHOCK, and Module 3495 is its operating guide for functions such as radio time calibration, solar charging, world time, alarms, stopwatch, and timer. Multi Band 6 reception depends on your Home City and location; outside supported areas, you can set the time and day manually. Casio specifies a 52 g resin watch with Tough Solar, shock resistance, and 200-metre water resistance.
The GW-M5610U keeps the classic square G-SHOCK design rather than becoming a smartwatch. Its appeal is practical digital timekeeping, solar charging, and radio adjustment where reception is available—not phone notifications or app connectivity.
What is module 3495 on the GW-M5610U?
Module 3495 is the watch’s operating system of functions and settings, not a separate watch model. Casio’s Module 3495 guide covers the GW-M5610U configuration’s timekeeping, radio reception, world time, alarms, stopwatch, countdown timer, lighting, and power-saving functions. Casio lists the official product as the GW-M5610U-1; check the case-back and regional product listing when identifying a particular watch.
Casio describes the GW-M5610U-1 as part of the square-faced 5600 series, which carries the design legacy of the DW-5000C. Its documented features include Tough Solar and Multi Band 6. It is a conventional digital watch, not a connected wearable with documented phone notifications, health sensors, apps, or Bluetooth.
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- Shock-Resistant Durability: Built to withstand the toughest conditions, this G-Shock watch features a rugged resin case and bezel, perfect for outdoor adventures and extreme sports.
- 200M Water Resistance: Designed for water enthusiasts, it’s suitable for scuba diving, swimming, and snorkeling, providing reliable protection up to 200 meters.
- Electro-Luminescent Backlight: The blue-green EL backlight with afterglow ensures clear visibility of the time, day, and date, even in complete darkness.
- Precision Stopwatch & Countdown Timer: Measure elapsed and split times with the 1/100-second stopwatch, or set up a countdown timer with up to a 24-hour range, ideal for timing workouts or daily tasks.
- Multi-Alarm with Flash Alert: Stay on schedule with a customizable alarm, hourly chime, and flash alert that combines light and sound for added convenience.
What are the GW-M5610U-1 specifications?
Casio Europe lists these physical specifications for the GW-M5610U-1:
| Specification | Casio listing |
|---|---|
| Case dimensions | 46.7 × 43.2 × 12.7 mm |
| Weight | 52 g |
| Case and bezel | Resin |
| Band | Resin |
| Glass | Mineral |
| Construction | Shock resistant |
| Water resistance | 200 metres |
| Power | Tough Solar rechargeable battery |
| Time adjustment | Multi Band 6 radio calibration |
These are manufacturer specifications, not independent test results. Regional product names and listings may differ, so verify the exact reference for the watch being offered.
What functions does Module 3495 provide?
Casio’s Module 3495 specifications describe the following functions:
| Function | Documented capability |
|---|---|
| World time | 48 cities across 31 time zones, plus UTC; users can select up to five favorite cities |
| Stopwatch | 1/100-second units during the first hour, then one-second units; 24-hour range, with elapsed, split, and first/second-place timing |
| Countdown timer | One-second units, up to 24 hours; 10-second beeper at the end |
| Alarms | Five alarms, including one snooze alarm; each alarm sounds for 10 seconds, plus an hourly time signal |
| Calendar | Full-auto calendar from 2000 through 2099 |
| Timekeeping without signal adjustment | Average accuracy of ±15 seconds per month at normal temperature |
Casio’s stated accuracy applies when signal adjustment is unavailable; it is not a guarantee of the exact drift of an individual watch. The product page also lists 12/24-hour time, a full auto calendar through 2099, six day-of-week languages, and an operation-tone mute feature.
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Yes. Casio specifies Multi Band 6 time calibration. Module 3495 lists the JJY, WWVB, MSF, DCF77, and BPC signal systems, with automatic and manual reception. This is terrestrial radio reception, not GPS, Bluetooth, Wi-Fi, or internet synchronization.
Reception is geographically limited and depends on the selected Home City, signal coverage, and conditions. Casio says to set the time and day manually where signal reception is not possible. A failed overnight reception alone does not show that the watch is defective.
How do I set the time on a Casio GW-M5610U?
Use automatic reception when you are in a supported reception area and the watch is configured for the appropriate area. If reception is unavailable, Casio’s guide provides manual time and day adjustment as the alternative. For a manual receive attempt, Casio gives these steps:
- Place the watch near a window or another suitable reception location; this can help but does not guarantee success.
- Enter Timekeeping Mode.
- Hold D for at least two seconds, until RCVD flashes.
- Check whether the reception succeeded and the time and day were adjusted.
Casio’s Module 3495 manual says a receive operation typically takes about 3–8 minutes and can take as long as 16 minutes. It also says reception is generally better at night than during the day. These are manual estimates, not guaranteed reception times.
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Rank #2
- Rugged & Sporty Design – Matte black finish with bold digital display, built for tactical, military, and extreme sports enthusiasts.
- High-Brightness LED Backlight – Features Super Illuminator LED with a light guide plate, ensuring exceptional visibility in low-light conditions.
- 200M Water Resistance – Engineered for swimming, snorkeling, and outdoor adventures, this shock-resistant watch is ready for action.
- Extended 7-Year Battery Life – Powered by a CR2025 battery, offering years of reliable performance without frequent replacements.
- Shock-Resistant Structure – Built to withstand extreme conditions, making it ideal for sports, military, and rugged outdoor use.
How do I charge a Tough Solar G-Shock?
The solar panel is integrated into the watch face and generates power when exposed to light. Casio advises placing the watch where it receives bright light when it is off-wrist and avoiding sleeve coverage while wearing it, since even partial blockage reduces generation. Avoid prolonged exposure to excessive heat, such as a sunlit vehicle dashboard or a spot near a heat source.
Casio’s Module 3495 guide gives illustrative charging estimates for one day of operation: about 8 minutes at 50,000 lux, 30 minutes at 10,000 lux, 48 minutes at 5,000 lux, or 8 hours at 500 lux. Under 50,000-lux sunny outdoor conditions, its recovery estimates are 3 hours from dead to medium, 34 hours from medium to high, and 10 hours from high to full. Casio cautions that actual times depend on charging environment, settings, and other factors; these figures are not guarantees.
How long does the GW-M5610U battery last?
Casio’s Module 3495 specification estimates approximately 10 months of operation under its listed use conditions without light. Casio’s GW-M5610U-1 product page separately estimates approximately 22 months when fully charged and stored in darkness with Power Saving enabled. These manufacturer estimates use different conditions and should not be treated as a guaranteed runtime.
Actual operation depends on light exposure, reception, alarms, illumination, and settings. If the charge indicator drops, follow Casio’s charging guidance and avoid excessive heat. Use an appropriate Casio service route for rechargeable-cell replacement or case service.
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What should I know about the GW-M5610U display and light?
The GW-M5610U-1 product page lists selectable white LED illumination and a full-auto light. Module 3495 provides a selectable illumination duration of 1.5 or 3 seconds. Auto Light can illuminate the display when the watch is angled toward the wearer; movement may also trigger it unintentionally. Frequent illumination uses power, and Casio notes that Auto Light is disabled during certain alarms, timer alerts, and time-calibration operations.
Display contrast depends on the specific display variant and viewing conditions. Check the exact regional product listing and product photos if display type or legibility is important to you.
What is the difference between the GW-M5610 and GW-M5610U?
Casio’s official product listing uses GW-M5610U-1, while regional naming can vary; Casio’s US site may use the shorter GW-M5610 designation. Because a marketplace title alone may be ambiguous, check the exact reference, official regional listing, and case-back before buying.
| Check | What to verify | Why it matters |
|---|---|---|
| Model reference | GW-M5610U-1 or the exact regional suffix and colorway | Regional names and product variants can differ |
| Case-back | Module number and watch identification | It helps confirm the actual watch rather than relying on the seller title |
| Listing | Seller, warranty, return policy, and clear product photos | These help establish what unit is being offered |
Is the GW-M5610U-1 worth buying?
The GW-M5610U-1 suits someone who wants a classic square G-SHOCK with Tough Solar, Multi Band 6, shock resistance, and 200-metre water resistance without smartwatch features. It may be a poor fit if you need phone notifications, app-based tracking, health sensors, Bluetooth synchronization, or a more advanced display.
Rank #3
- TOUGH & SHOCK-RESISTANT CONSTRUCTION: Put it to work — G-Shock's shock-resistant structure paired with a rugged resin case and band is built to take the punishment of outdoor use, sports, and everyday wear without skipping a beat.
- 200-METER WATER RESISTANCE: From poolside laps to open-water snorkeling, a 200M (660 ft) water resistance rating means this G-Shock keeps performing where lesser watches stop — built for water exposure without hesitation.
- MULTI-FUNCTION DIGITAL DISPLAY: Designed for everyday reliability, this watch keeps you on schedule with a 1/100-second stopwatch, countdown timer, daily alarm, and hourly signal. The full auto-calendar helps you stay organized, while the flexible 12/24-hour format fits your preferences. A built-in flash alert uses both sound and light to ensure you never miss a notification.
- LONG-LASTING BATTERY LIFE & ACCURATE TIMEKEEPING: Built for reliability, the G-Shock DW9052 offers approximately 2 years of battery life with a CR2016 cell. Its precision movement maintains accuracy within ±15 seconds per month, so you can count on dependable timekeeping wherever life takes you—whether for daily wear, travel, or demanding work environments.
- EASY-TO-READ EL BACKLIGHT: The electro-luminescent backlight with afterglow ensures clear visibility, even in low-light or nighttime conditions. Its soft blue-green illumination makes it easy to read the display at a glance—providing reliable visibility anytime, anywhere.
Consider your local radio coverage, how you will expose the face to light, and whether the resin case and mineral glass suit your needs. For a purchase, verify the exact reference, regional suffix, seller, and warranty on the live listing; current prices and stock are not established here.
Will a replacement band fit the GW-M5610U?
Casio lists a resin band, but the research does not establish a specific compatible replacement band or part number. Do not assume that every 5600-series band fits. Verify compatibility for the exact watch reference with Casio or the seller before buying a replacement.
What should owners know about maintenance?
Keep the case and band clean, follow Casio’s handling and water-resistance guidance, monitor the charge indicator, and consult the operating guide for reception, lighting, and power-saving settings. The specifications and charging figures above are Casio’s published guidance, not independent durability, water-resistance, reception, or runtime tests.
FAQ
Does the GW-M5610U have Multi Band 6?
Yes. Casio specifies Multi Band 6 radio time calibration, but reception depends on the Home City, geographic coverage, and conditions. Manual time and day setting is available when reception is not possible.
How long does a GW-M5610U charge take?
Casio’s Module 3495 guide gives illustrative charging times that vary by light intensity and desired charge level. Actual time depends on the environment and settings, and Casio cautions against charging in excessive heat.
How long does the GW-M5610U battery last?
Casio estimates approximately 10 months under the module guide’s listed conditions without light, or approximately 22 months fully charged in darkness with Power Saving enabled. These are conditional manufacturer estimates.
Will a replacement 5600 band fit the GW-M5610U?
Not necessarily. Verify the replacement’s compatibility with your exact reference before buying; the available research does not confirm a particular replacement band.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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