Japan Treasure Factory
Casio G-STEEL GST-B1000D-3AJF SLEEK STYLE — Bluetooth Tough Solar Metal Band
Casio G-STEEL GST-B1000D-3AJF SLEEK STYLE — Bluetooth Tough Solar Metal Band
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G-STEEL GST-B1000D — SLEEK STYLE
G-STEEL GST-B1000 Series / SLEEK STYLE / Released November 2025
The GST-B1000D-3AJF reconstructs G-SHOCK's toughness philosophy in a refined, minimal form. The logo-free bezel shifts expression with the angle of light, and the stainless steel band combines a hairline finish with mirror-polished surfaces for a rich, dressed-up texture. A newly developed one-push tri-fold clasp brings a clean design and a secure hold, while the bezel silhouette and brick-pattern texture nod back to the original DW-5000C, the watch that started G-SHOCK.
The metal bezel guards against shock while the carbon fiber reinforced resin case protects the module; a bonded-glass construction and compact module reduce thickness and weight without compromising shock resistance. Powered by Tough Solar with Bluetooth connection to the CASIO WATCHES app for automatic time correction, easy watch setting, Time & Place, and phone finder. Time correction on this model is Bluetooth only. A screw-lock crown and 20-bar water resistance complete the build — an all-round timepiece equally at home in business, casual, and outdoor settings.
Specifications
| Model | GST-B1000D-3AJF |
| Series | G-STEEL GST-B1000 Series / SLEEK STYLE |
| Case size | 46.9 × 44.2 × 11.6 mm / 1.85 × 1.74 × 0.46 in |
| Weight | 118 g / 4.2 oz |
| Case / bezel material | Carbon fiber reinforced resin (biomass plastic) / stainless steel |
| Band | Metal band (solid stainless steel), hairline & mirror finish, one-push tri-fold clasp |
| Glass | Mineral glass |
| Water resistance | 20-bar (200-meter) |
| Structure | Shock resistant, Carbon Core Guard structure |
| Time correction | Bluetooth (auto time correction via smartphone) |
| Power source | Tough Solar |
| Mobile Link / App | CASIO WATCHES app — auto time correction, easy watch setting, Time & Place, phone finder |
| Crown | Screw-lock crown |
| Functions | Stopwatch (1-sec, 30-min), Timer (1-min unit, max 30 min), Time alarm, LED Super Illuminator light with afterglow (white), Full auto calendar, Power saving function, Battery charge warning, Date/day display |
| Battery life | ~5 months (with functions) / ~18 months (power saving) |
| Accuracy | Average monthly deviation ±15 seconds (standard quartz accuracy when Bluetooth sync unavailable) |
| Band size | 150–205 mm |
| Release date | November 2025 |
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