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| Pictured - a close up shot of the Casio MTG-B4000-1AJF dial. The upcoming MTG-B4000D is expected to retain most aspects of this dial design. |
The rumor mill is churning for G-Shock fans, and we now have our clearest look yet at what appears to be Casio’s next premium MT-G release. Fresh information from Japanese sources points to the imminent launch of the Casio MTG-B4000D, a model set to bring a significant and highly requested upgrade to the series: a full metal bracelet.
This follows the debut of two resin-strap MTG-B4000 models earlier in 2025, which themselves introduced a major overhaul in case construction. Now, the spotlight shifts to a version that could redefine the series' feel on the wrist.
A Trusted Source Reveals the Details
The information originates from detailed blog reports in Japan, which have proven reliable in the past for early G-Shock intel. These sources provide not just specifications, but a compelling picture of the upcoming timepiece.
The Big Upgrade: A Premium Metal Bracelet
The most significant change for the MTG-B4000D is right in the name. The "D" suffix in G-Shock nomenclature typically denotes a metal band, and this model is expected to fully replace the resin straps of the current B4000 lineup. This shift is more than cosmetic; it's a tactile revolution. Swapping resin for metal is poised to give the watch a substantially heavier, more substantial, and more premium feel, aligning it closer to the heft and luxury of Casio’s top-tier MR-G line while retaining the MT-G's distinct identity.
Advanced Construction Meets AI Design
Beyond the bracelet, the B4000D is expected to carry forward the series' groundbreaking carbon laminated frame. This isn't just marketing speak. The design fuses layers of carbon fiber with metal components, creating a structure that is remarkably rigid yet lightweight. Intriguingly, Casio has revealed that this frame was optimized using AI-assisted simulations to perfect the balance of strength, weight, and ergonomic shape before human designers made the final adjustments. Visually, this results in the carbon fiber sides presenting a more pronounced, layered look against the case—a detail that should catch the light and the eye.
Loaded with Flagship Features
As expected for the MT-G tier, the B4000D is reported to be packed with Casio's most robust technology:
- Triple G Resist: Protection against shocks, vibrations, and centrifugal forces.
- Tough Solar: Reliable charging from any light source.
- Bluetooth Connectivity: For automatic time syncing via the Casio app.
- Sapphire Crystal: With an anti-reflective coating for superior scratch resistance and clarity.
- High-Brightness LED: For illumination in low light.
- Made in Japan: Crafted with pride at Casio’s Yamagata factory, a hallmark of its premium lines.
Availability and Official Word
It’s important to note that Casio has not officially announced the MTG-B4000D. The current information comes from enthusiast sources and leaked catalog materials. However, with a concrete model number in circulation and detailed specs available, an early January 2026 launch seems highly plausible. This timing aligns with Casio's historical release patterns for new models.
For those eager to see the source material, a detailed analysis (in Japanese) can be found here: Casio MTG-B4000D Details Emerge.
If the shift to a solid metal bracelet is what you’ve been waiting for in a modern, high-tech G-Shock, the MTG-B4000D is shaping up to be a must-watch release. It represents a fusion of brute-strength engineering, AI-driven design, and a more refined, premium wearing experience.
*While we await the official launch, you can explore the current resin-strap MT-G series, like the Casio MTG-B4000-1, to appreciate the foundation upon which this new metal-bracelet model is built. Check availability and pricing here: View on Amazon.*