Casio Launches $80,000 Sapphire G-Shock in Limited Run of 20

Key points

• The MRG-D5000 is priced at $80,000 (11 million yen) and is limited to 20 units worldwide, making it the most expensive G-Shock in history.
• The watch features an outer case and bezel made entirely from blue sapphire crystal, a material that is hard but brittle, requiring new engineering solutions to meet G-Shock’s shock-resistance standards.
• Casio developed a 'Multi-Guard Structure' for the sapphire case, using interlocking components without screws to prevent stress points that could cause cracking, inspired by traditional Japanese timber framing.
• The 'Blue Rose Project' includes two additional models: the MRG-B5000SA-2 at $9,500 (limited to 500 pieces) and the GMW-B5000SB-1A at $850, both incorporating blue sapphire accents.
• The project fulfills a long-standing vision of G-Shock creator Kikuo Ibe, who unveiled sapphire prototypes in 2017 but could not achieve shock resistance at the time; the new models are inscribed with 'Dream Project' as an homage.
• All three watches feature Tough Solar power, Multi-Band 6 radio-controlled timekeeping, and 200-meter water resistance, with the MRG-D5000 also featuring 24-karat gold lettering and a rubber strap with a brick pattern.

Background

Casio’s G-Shock brand, founded in 1983, is known for its rugged, shock-resistant timepieces. The MR-G line, launched in 1996, represents the brand’s high-end tier, combining G-Shock durability with premium materials and Japanese craftsmanship. Previous attempts at sapphire cases, such as the 2017 prototypes by Kikuo Ibe, failed to meet shock-resistance standards due to the material’s brittleness. The 2022 MRG-B5000 introduced the Multi-Guard Structure in titanium, which served as the foundation for the sapphire adaptation. The 'Blue Rose Project' is part of the MR-G’s 30th anniversary celebration, which also includes the ice-inspired MRG-BF1000EB-1A and the Haruka models featuring metal leaf and laser processing.

How outlets are covering it

WIRED emphasizes the historical significance of the release, noting that the 2017 prototypes by Kikuo Ibe were never intended for sale due to manufacturing difficulties. Hodinkee highlights the hands-on experience, praising the fit and finish of the MR-G line while noting that the sapphire case is thicker (16.45mm) and less elegant than metal counterparts. Fratello Watches focuses on the technical innovation of the screwless, interlocking construction, comparing it to traditional Japanese timber framing. Revolution Watch contextualizes the release within the MR-G’s 30-year evolution, linking it to the brand’s 'monozukuri' philosophy of craftsmanship and the broader 30th anniversary program. All sources agree on the price, limited availability, and the technical challenges of using sapphire in a shock-resistant watch.

Why it matters

The MRG-D5000 represents a significant milestone for Casio, demonstrating the brand’s ability to push the boundaries of its core technology into luxury materials. By successfully engineering a shock-resistant sapphire case, Casio bridges the gap between its rugged heritage and high-end watchmaking, appealing to collectors and enthusiasts who value both durability and innovation. The release also underscores the brand’s commitment to Japanese craftsmanship and traditional techniques, reinforcing its position in the luxury market while maintaining its identity as a maker of tough, reliable timepieces.

What to watch

The MRG-D5000 will be sold via lottery in Japan starting in December 2026. The MRG-B5000SA-2 and GMW-B5000SB-1A are expected to go on sale in November 2026. Casio may continue to explore advanced materials and traditional craftsmanship in future MR-G releases, potentially expanding the 'Blue Rose Project' or introducing new variations of the Multi-Guard Structure. The success of these limited editions could influence the brand’s approach to high-end collaborations and material innovation in the coming years.