Casio G-Shock GST-W1000 Specs & Release Date
Verified Casio GST-W1000 release timing, model codes, Japan prices, key specs and the details international buyers still need to confirm.
The short version
What Casio has actually confirmed
The GST-W1000 is a new analog G-Steel series with three dial colors, a stainless-steel bracelet and an official “new 10/2026” marker on Casio’s international product pages. The practical headline is the combination of solar charging, two automatic time-setting routes, a sapphire crystal and full 200-meter water resistance in a 13.2 mm-thick case.
✓ Confirmed
- Casio has announced three references and lists each as new for October 2026.
- All three official international product pages show the same core dimensions and functions; the blue Japanese model also lists a black-IP bezel finish.
- Casio Japan lists tax-inclusive MSRPs of ¥110,000 for black and green, and ¥115,500 for blue.
- The case uses bio-based carbon and stainless steel with a solid stainless-steel bracelet.
- Automatic time adjustment is available through both Bluetooth and Multiband 6 radio reception.
? Still unknown
- Official retail prices for individual countries were not listed on the international pages checked.
- Country-by-country sale dates, stock and authorized-retailer lists were not yet published there.
- Import duties, local tax and warranty handling depend on the buyer’s country and seller.
That distinction matters for import buyers. An international product page confirms that a model exists; it does not by itself confirm the price, inventory, warranty route or launch day in every country.
Model decoder
Three references, one functional platform
The three references share their core functions, but the Japanese page for the blue model also specifies a black-IP bezel and a higher domestic price. Japanese references add the JFsuffix. Use the complete regional code when setting an alert or checking a retailer listing.
Specification check
The numbers worth comparing
- Case
- 50 × 45.5 × 13.2 mm
- Weight
- 138 g
- Water resistance
- 200 meters / 20 bar
- Power
- Tough Solar
- Time sync
- Bluetooth + Multiband 6
- Crystal
- AR-coated sapphire
- Band fit
- 150–205 mm
- World time
- 38 time zones / 26 cities on watch
What the timekeeping setup means
The watch can adjust itself through the Casio Watches phone app over Bluetooth or receive Multiband 6 radio signals. Casio lists transmitters in Japan, China, the United States, the United Kingdom and Germany. Radio reception is therefore location-dependent; Bluetooth provides a second route where a compatible phone and app are available.
Without either calibration route, Casio rates ordinary accuracy at ±15 seconds per month. Tough Solar runs the watch from light. The international page lists about five months after a full charge under normal use without further light, or 22 months in darkness with power saving enabled. Casio’s Japanese pages list 18 months for the latter figure, so official regional specifications differ.
International buyer check
Before ordering from another country
- Match the complete reference.A listing that says only “GST-W1000” does not tell you which of the three announced colors it is.
- Use the Japan price as a baseline, not a landed price.Casio Japan lists ¥110,000 including tax for black and green, and ¥115,500 for blue. Pricing outside Japan is still unconfirmed.
- Ask who handles warranty service.A global-looking product page is not proof that a gray-market seller provides local manufacturer warranty coverage.
- Check the landed price.Shipping, import tax, sales tax or VAT can erase an apparent overseas discount.
- Confirm app availability.Bluetooth features rely on the Casio Watches app and a compatible phone; check your regional app store before importing.
Track it now; do not rush an import order on the announcement alone. The core hardware is well documented, but regional price, stock and warranty are still the variables that decide whether importing makes sense.
Fit reality check
45.5 mm wide and 138 g is not a small watch
Case width alone can be misleading, so compare all three published dimensions with a watch you already wear: 50 mm lug-to-lug, 45.5 mm wide and 13.2 mm thick. At 138 g on a steel bracelet, it will also feel materially different from a lightweight resin G-Shock.
Quick check: put your current watch on a kitchen scale, then compare its weight with 138 g. Measure its case across and thickness—not the strap—to make the size numbers tangible.
Casio lists the bracelet’s compatible wrist range as 150 to 205 mm. Bracelet sizing may require removing links, so factor that into a remote purchase.
Source ledger
Pages checked for this report
Facts above were checked against Casio’s own announcement and international product listings on September 11, 2026. Japanese pages were also used for domestic model codes and tax-inclusive MSRP. Links open the exact source pages.
- Casio corporate announcement Announcement date, construction and model lineup
- Casio GST-W1000D-1A product page Full specifications and October 2026 status
- Casio GST-W1000AD-2A product page Blue model reference check
- Casio GST-W1000D-3A product page Green model reference check
- Casio Japan GST-W1000D-1AJF page Black model Japan code and MSRP
- Casio Japan GST-W1000AD-2AJF page Blue model Japan code, MSRP and black-IP finish
- Casio Japan GST-W1000D-3AJF page Green model Japan code and MSRP
See a newer official price or regional date? This report will be updated only after the new information can be verified at its source.