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Turns out my perfect watch was always a Casio G-Shock GW-5000 Square

I tried being the Seiko Diver guy but it turns out I've loved digital watches ever since Indiglo so my EDC watch is now the Casio G-Shock GW-5000-1JF, the Japanese-made version of the everyman's digital G-Shock Square that you can pick up at Wal-Mart for $50.
Turns out my perfect watch was always a Casio G-Shock GW-5000 Square

My GW-5000-1JF

Basically, the GW-5000 Casio G-Shock is exactly like the Casio G-Shock watch I bought when I was 13. 

Not exactly the same, but just as tough as the DW-5000C I wore Scuba diving in Hawaii as a young teen, just after receiving my Open Water Diver certification. 

When I bought my GW-5000 it had a stainless-steel screw-down back and was a little heavy but it was tough-as-nails down to 200 meters (20 Bar).

During my entire diving career, I never went down deeper than 130 feet, so it's fine (while I want a Rolex Sea-Dweller more than anything, will I ever need deeper than 200 meters?).

So, 37-years-later, I ordered a very special Casio G-Shock from Japan. Its formal name is the Japan-Made Square-Case Casio G Shock GW-5000-1JF Multi-Band 6 Tough Solar watch and I bought it from Japanese-seller Premium-Japan via Amazon.

casio g shock gw 5000 1jfWhen I said that my new Japanese-made Square-faced G-Shock was different from my original DW-5000C, that's because over 35-years have passed and Casio added a number of functions to the original.

The GW-5000 I bought has both a radio so that it can sync with an atomic clock every night and a small solar panel on its face in order to recharge instead of ever needing a battery replacement.

To me, both are useful additions. Every time one replaces a battery, one risks compromising the pressure integrity of the watch. Keep her sealed.

Aside from the fancy things like the radio and solar, I really appreciate the positive LCD display.

While I thought the reverse-display on my old blacked-out G-Force square, it grew tired of it.

I really appreciate the bright, regular, display that the GW-5000 has. It also has a very nice, bright, "indigo."

Actually, I just looked it up. It's called Electroluminescence Backlight (EL). EL Backlight is a solid-state phenomenon that uses colored phosphors to generate light.

I love it.

And I also love a feature that the GW-5000 has, which I think is also shared with the GWM5610B-1, GW-S5600, and GW-5510.

casio g shock gw 5000 1jfAnother thing they share is a cool Auto Light. Enabling Auto light will automatically turn on display illumination whenever you tilt the watch towards for face to read it—and I love that!

And I won't worry about running out of juice by abusing that feature because of the built-in solar-charging feature.

Does nobody else wear their watch sleeping? I do.

As a result, I love it when I wake up wanting to know the time and all I have to do is flop my wrist into the viewing angle (I wear my watch on my left wrist where God intended) and the bight bluish EL backlight pops on for a couple-few seconds, allowing me a quick easy time update.

casio g shock gw 5000 1jfOh, finally, while my new GW-5000 doesn't support 300 cities like the G-SHOCK+ World Time in module 5413, but it does support 48 cities that I can scroll through. I set world time onto UTC.

On the other hand, I paid $245 for my Casio G-Shock GW-5000-1JF and it shares the exact same features as the popular and $82 Casio G-Shock GWM5610-1.

This wasn't a rash decision, however. I had been wearing my old reliable Casio G-Shock G-Force Military Concept watch  (DW5600MS-1CR) that I converted to being able to accept a bright green faux Zulu nylon strap and a genuine Casio strap adapter item number 74243710.

It's cool and I really love it. It's more like my original DW-5000C except it has much better illumination. 

Casio G-Shock GW5000 FAQ and Glossary

1. What is the Casio G-Shock GW5000? The GW5000 is a premium version of the classic G-Shock Square series, designed for durability and reliability. It features a stainless-steel screw-down back and is water-resistant up to 200 meters.

2. How does the GW5000 differ from its predecessor, the DW-5000C? While retaining the original's toughness, the GW5000 incorporates modern features like radio-sync with an atomic clock and solar charging, eliminating the need for battery replacements.

3. What is the significance of the GW5000 being a JDM (Japanese Domestic Market) model? JDM models like the GW5000-1JF are made in Japan and often feature exclusive designs or functions not available in international models. They are highly sought after by collectors.

4. Why is the GW5000 considered special among G-Shock enthusiasts? Its combination of classic G-Shock Square design, advanced features (radio time-syncing, solar charging), and quality construction (e.g., stainless-steel back) set it apart as a premium option.

5. What is the difference between the GW5000 and GW5600? While both are part of the G-Shock Square series, the GW5000 is designed as a higher-end model with features like solar power and atomic timekeeping, which may not be present in all GW5600 models.

6. How does solar charging work on the GW5000? The watch face includes a small solar panel that captures light to recharge the battery, supporting its operation without the need for manual battery replacements.

7. What is the history of the G-Shock Square series? The G-Shock Square series began with the DW-5000C in 1983, introducing a durable, water-resistant watch with a distinctive square shape that became iconic for G-Shock.

8. What does "Tough Solar" mean for the GW5000? "Tough Solar" refers to Casio's solar charging technology, enabling the watch to operate on solar power, enhancing its reliability and eco-friendliness.

9. Can the GW5000 sync time automatically? Yes, the GW5000 features Multi-Band 6 technology, allowing it to automatically sync time with atomic clocks via radio signals.

10. What is the Electroluminescence Backlight (EL) on the GW5000? EL backlighting provides efficient, bright illumination of the watch display using colored phosphors, a feature appreciated for its visibility in low light.


  • Atomic Clock Sync (Radio-Controlled): A feature that allows the watch to automatically adjust its time based on signals received from atomic clocks.
  • DW-5000C: The original G-Shock Square model launched in 1983.
  • Electroluminescence (EL) Backlight: A technology used for backlighting the watch display, offering clear visibility in the dark.
  • G-Shock Square: A series of G-Shock watches known for their distinctive square shape.
  • GW5000-1JF: A specific model of the GW5000 series, made in Japan and featuring premium materials and functions.
  • Japanese Domestic Market (JDM): Products specifically designed for sale in Japan, often featuring exclusive specifications.
  • Multi-Band 6: Technology enabling the watch to receive time calibration signals from six worldwide radio towers for accurate timekeeping.
  • Solar Charging: A feature allowing the watch to recharge its battery using light, eliminating the need for battery replacements.
  • Stainless Steel Screw-Down Back: A construction feature enhancing the watch's water resistance and durability.
  • Tough Solar: Casio's proprietary solar charging system for watches, ensuring long-term operation without needing to change batteries.
  • Water Resistance: The ability of a watch to withstand pressure at a specified depth without allowing water ingress, measured in meters (e.g., 200m for the GW5000).
  • Positive LCD Display: A display type where the numbers are shown in a dark font on a light background, offering easier readability in various lighting conditions.
  • Auto Light Feature: A function that automatically illuminates the watch's display when it is tilted towards the wearer's face, facilitating easy reading of the time in dark conditions.
  • World Time Function: Allows the watch to display the current time in various cities and time zones around the world, making it ideal for travelers.
  • Pressure Integrity: Refers to a watch's ability to maintain its water resistance and structural integrity when exposed to different pressures, such as during battery changes or underwater activities.
  • GWM5610: A model within the G-Shock series that shares several features with the GW5000, such as solar power and atomic time synchronization, but may differ in design or other specifications.
  • Module 5413: Refers to a specific internal configuration or mechanism of a Casio watch, governing its functions and operations. Different models may have different modules.
  • Zulu Nylon Strap: A type of watch strap made from nylon, known for its durability and comfort. Often used in military and tactical watches.
  • Atomic Timekeeping: The watch's ability to synchronize with atomic clocks via radio signals, ensuring highly accurate timekeeping.
  • Toughness: A hallmark of G-Shock watches, indicating their durability and resistance to shocks, vibrations, and harsh conditions.
  • EDC (Everyday Carry): Refers to items that are carried on a regular basis for use in everyday tasks, including watches, tools, and other personal items.
  • Solar Panel Face: The part of the watch that includes a solar cell to capture light for charging the battery, seamlessly integrated into the design of the watch face.
  • G-Force Military Concept: A theme or design inspiration for some G-Shock watches, emphasizing ruggedness and functionality suited for military or tactical use.
  • Casio Strap Adapter: A specific part designed to allow customization of G-Shock watches with different straps, enhancing versatility and personalization.
  • Backlight Duration: Refers to the length of time the watch's backlight stays on after being activated, which can often be adjusted based on the wearer's preference.
  • Water Resistance Rating (200m): Indicates that the watch can withstand pressures equivalent to a depth of 200 meters, making it suitable for swimming and diving.
  • GW-S5600: Another model within the G-Shock Square series, featuring similar technology and design elements as the GW5000, but with variations in specifications or features.
  • EL Backlight Color: The specific hue of the electroluminescent backlight used in a watch, which can vary from model to model, affecting the visual aesthetic of the time display.
  • Atomic Clock: An extremely accurate type of clock that uses oscillations of atoms to keep time, used as the standard for global timekeeping.
  • Battery Replacement Risk: The potential for compromising a watch's water resistance and integrity during the process of changing its battery, a concern mitigated by solar charging in models like the GW5000.
  • GW-5510: Part of the G-Shock Square series, this model may share certain features with the GW5000, such as durability and design, while differing in other aspects like functions and specifications.