Casio is set to refresh its G‑Steel line with two all‑black variants that add full‑body IP coating, a new blue‑dial option, and the same carbon‑core internals. The upcoming GST‑B1000BD‑1A and GST‑B1000BD‑2A keep the compact 46.9 × 44.2 × 11.6 mm case, Bluetooth, solar charging and classic G‑Steel functions, while pushing the price a modest $30‑$40 above the current GST‑B1000 models.
What’s new
Casio’s G‑Steel collection is about to get its first visual overhaul since the GST‑B1000 series debuted in autumn 2025. Renderings leaked by the reputable Casioblog show two new black‑out colorways – the GST‑B1000BD‑1A and GST‑B1000BD‑2A – slated for a mid‑summer launch.

Both watches share an identical case size of 46.9 × 44.2 × 11.6 mm, which is on the smaller side for G‑Steel models. The chassis is built around a carbon‑core structure with damper inserts tucked under the bezel, a design that helps keep the profile slimmer than older G‑Steel pieces such as the GST‑B100D‑1ACR (currently about $479 on Amazon).
The bracelet is a cast‑link design that mixes mirror‑polished and satin finishes, and the pins are reinforced for added durability. The biggest visual change is the full IP coating that runs across the case, bezel and bracelet, turning the hardware a dark gray‑to‑black hue.

Dial variants
- GST‑B1000BD‑1A – a true blackout model. The entire watch, including the dial, is coated in the same IP‑treated black. Legibility is preserved thanks to Neobrite‑coated hands and indices, which glow under the Super Illuminator LED.
- GST‑B1000BD‑2A – swaps the all‑black dial for a vivid blue face. The blue dial features a subtle textured pattern reminiscent of the iconic DW‑5000 brick finish, creating a visual contrast against the blacked‑out hardware.

Both variants retain the Bluetooth connectivity and solar charging that define the G‑Steel line. Functionally they offer a 30‑minute stopwatch, timer, daily alarm, Super Illuminator backlight, and a 24‑hour time window. The companion app still provides battery‑level monitoring, as the watches themselves lack an on‑watch indicator.
How it compares
| Feature | GST‑B1000 (2025) | GST‑B1000BD‑1A | GST‑B1000BD‑2A |
|---|---|---|---|
| Case size | 46.9 × 44.2 × 11.6 mm | Same | Same |
| Material | Carbon core, stainless steel bezel | Same core, full IP‑coated black finish | Same core, black finish + blue dial |
| Dial color | Dark gray | Full black | Blue with texture |
| Bracelet | Cast‑link, mixed finish | Same design, black‑coated | Same design, black‑coated |
| Connectivity | Bluetooth 5.0 | Bluetooth 5.0 | Bluetooth 5.0 |
| Power | Solar + rechargeable battery | Solar + rechargeable battery | Solar + rechargeable battery |
| Price (estimated) | $410‑$420 | $450 | $450 |
Compared with the original GST‑B1000, the new models add aesthetic depth without altering the core specs. The IP coating not only gives a premium look but also adds a thin protective layer against scratches and minor impacts. The blue‑dial version may appeal to users who want a splash of color while keeping the rugged G‑Steel silhouette.
Who it’s for
- Minimalist collectors who appreciate a sleek, monochrome aesthetic will gravitate toward the GST‑B1000BD‑1A. The all‑black treatment makes the watch blend seamlessly with both formal and casual attire.
- Fans of subtle sport styling will likely prefer the GST‑B1000BD‑2A. The blue dial adds a hint of personality without compromising the watch’s understated toughness.
- Existing G‑Steel owners looking for a fresh look without sacrificing durability or functionality can see the new variants as a logical upgrade, especially if they already use the Casio Watches app for battery monitoring.
- Budget‑conscious buyers should note the modest price bump – roughly $30‑$40 above the standard GST‑B1000 – which is justified by the additional coating process and the new dial tooling.
Bottom line
Casio’s upcoming black‑out G‑Steel models demonstrate that the brand is willing to iterate on design while keeping the proven carbon‑core platform intact. The GST‑B1000BD‑1A offers a pure, stealthy look, whereas the GST‑B1000BD‑2A injects a dash of color with a nod to classic Casio textures. For anyone already in the G‑Steel ecosystem, the new variants provide a fresh visual option at a price point that remains competitive within the premium quartz segment.
Sources: Casioblog (render leaks and specifications).

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