Japan Treasure Factory
Casio G-STEEL GST-B1000D-2AJF SLEEK STYLE — Bluetooth Tough Solar Metal Band
Casio G-STEEL GST-B1000D-2AJF 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 G-STEEL GST-B1000D brings a refined "SLEEK STYLE" to the G-STEEL line, combining a carbon fiber reinforced resin (biomass plastic) and stainless steel case with a solid stainless steel metal band on a one-push tri-fold clasp. The design pairs G-SHOCK toughness with a dressed-up metal finish suited to everyday wear on and off duty.
Shock resistance is reinforced by a Carbon Core Guard structure, and the watch is powered by Tough Solar with Bluetooth connection to the CASIO WATCHES app for automatic time correction, easy watch setting, Time & Place, and a phone finder function. Time correction on this model is Bluetooth only. A screw-lock crown and 20-bar water resistance round out the build.
Specifications
| Model | GST-B1000D-2AJF |
| 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), 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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