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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThe Casio G-STEEL GST-B500 is a slimmer, lighter analog-digital G-SHOCK designed to combine a metal-band look with shock resistance, Tough Solar charging and Bluetooth smartphone linkage. Casio called it the thinnest G-STEEL at its 2022 launch; that is a launch-era brand claim, not proof that it remains the thinnest across every G-STEEL released since.
Is the Casio GST-B500 the thinnest G-SHOCK?
Not necessarily across the entire G-SHOCK range. Casio’s April 2022 launch announcement positioned the GST-B500 as the thinnest G-STEEL, while its Japanese product page called it the thinnest and lightest metal-band model in the G-STEEL line. Those comparisons describe Casio’s launch-era positioning; they do not establish that no later G-STEEL is thinner.
Casio says a thinner module was made possible by downsized components and high-density mounting, while retaining Bluetooth and solar functions. The watch also uses a Carbon Core Guard structure: a carbon-fiber-reinforced resin case protects the module, and Casio says a revised one-piece bezel helps reduce the overall size. The line was announced on 21 April 2022, with Singapore availability beginning 29 April 2022. Read Casio’s Singapore launch announcement.
How thick is the G-STEEL GST-B500?
For the specific GST-B500D-1A1 listed by Casio Malaysia, the dimensions are 46.6 × 48.9 × 12.8 mm and the weight is 143 g. These are variant- and market-specific figures, not a guaranteed specification for every GST-B500 configuration. Check the GST-B500D-1A1 Malaysia specifications.
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- 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.
A 12.8 mm case can be a more restrained fit than the chunky profile many people associate with G-SHOCK, but the watch is still 46.6 mm across and weighs 143 g in this metal-band configuration. If wrist clearance or weight is decisive, compare the exact regional model’s measurements and try it on if possible.
What is the difference between GST-B500D, GST-B500AD, GST-B500BD and GST-B500GD?
The model families mainly distinguish the finish and dial presentation. The suffix matters: regional codes can differ, so confirm the full model number and listing for your market rather than assuming all versions share the same dimensions, weight or availability.
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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.
| Model named by Casio | Documented presentation | What to check |
|---|---|---|
| GST-B500D-1A / GST-B500D-1A1 | Stainless-steel/silver presentation; the D-1A1 listing specifies a stainless-steel band. | Confirm the complete suffix and local listing. The 143 g and 12.8 mm figures apply to Casio Malaysia’s D-1A1 listing. |
| GST-B500AD-3A | Green accents; Casio Japan notes green accents on the GST-B500AD. | Check the exact dial and regional suffix in product photos. |
| GST-B500BD-1A | Blacked-out presentation; Casio Japan notes blacked-out indexes and subdial rings. | Check how the dark details and LCD appear under your usual lighting. |
| GST-B500GD-9A | Gold-tone presentation. | Confirm the finish and availability for the exact market listing. |
Casio-hosted coverage also describes a negative LCD across the range. Display contrast can be personal and lighting-dependent, so inspect the specific variant rather than assuming one finish is easier to read than another. See Casio’s regional GST-B500 series information and the Casio-hosted model and finish overview.
Does the GST-B500 have Bluetooth and solar charging?
Yes. Casio lists Bluetooth smartphone linkage and Tough Solar charging for the GST-B500 series. Solar charging reduces reliance on routine battery replacement, while Bluetooth extends some settings and information features through the CASIO WATCHES app. The watch remains usable as a watch without treating the app as a prerequisite for its core timekeeping.
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- Super Matte Finish, Shock Resistant, 200M water resistance, LED light (Super illuminator), World time, Stopwatch, Countdown timer, 5 daily alarms, Hourly time signal, Hand shift feature
- Full auto-calendar, 12/24-hour format, Analog: 2 hands (hour, minute (hand moves every 20 seconds)), Digital: Hour, minute, second, pm, month, date, day, Approx. battery life: 5 years on CR2016
- Quartz Movement
- Case Diameter: 52.8mm
- Water resistant 200m (660ft): in general, suitable for professional marine activity and serious surface water sports, but not diving
Casio Japan documents app-linked time-and-place logging, reminders for up to five events, automatic time correction four times a day, world-time city selection across more than 300 cities, home/world time swapping, and timer and alarm settings. Separately, the listed watch functions include world time for 38 cities and five daily alarms. These are distinct descriptions of app capabilities and on-watch specifications, not interchangeable city counts. Casio’s page does not establish compatibility with every region or current phone operating-system version, so check the app listing for your phone before buying for a particular connected feature. See Casio Japan’s GST-B500 product information.
What functions does the GST-B500 include?
Casio’s regional series specifications list these functions:
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- Band Size: Mens-Standard
- Shock Resistant
- Auto LED Light with Afterglow
- Magnetic Resistant
- Shock resistance and 20-bar water resistance.
- Tough Solar charging and Bluetooth smartphone link.
- World time, with 38 cities listed for the watch functions.
- A 1/100-second stopwatch and countdown timer.
- Five daily alarms and a hand-shift function.
- Double LED illumination.
Specifications and features can vary by market listing. Use the official page for the exact suffix you are considering to verify the details. Casio’s regional GST-B500 series page lists the family features.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is the GST-B500 waterproof?
Casio rates the GST-B500 at 20 bar water resistance. That is a substantial water-resistance rating, but “waterproof” is not an unlimited guarantee: the rating does not mean the watch is suitable for every depth, pressure, activity or condition. Follow the model manual’s guidance for use and care, and have seals checked as appropriate for the watch’s age and service history.
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- Sport Type: Scuba Diving
For model-specific instructions and support, use Casio Singapore’s GST-B500D-1A1 support page.
Who should choose the GST-B500?
The GST-B500 makes sense if you want a metal-band G-SHOCK with a comparatively restrained case thickness, solar charging and connected features, while keeping the shock-resistant design and 20-bar rating. Its metal styling and multiple finishes give it a more polished look than many resin-heavy G-SHOCK designs.
Quick Recap
- Consider it if: you value a metal-band appearance, solar charging, Bluetooth-linked functions and a 12.8 mm profile on the documented D-1A1.
- Check carefully if: you have a smaller wrist, prefer a lighter watch, need maximum LCD contrast, or depend on a particular app function or phone compatibility.
- Verify before ordering: the full model suffix, local specifications, finish, stock and current price. Casio Malaysia’s page listed RM1,549 for the GST-B500D-1A1, but that is a regional MSRP and should not be treated as a current street price elsewhere.
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.
