G-SHOCK’s MR-G line has long represented the absolute apex of indestructible luxury. To mark the 30th anniversary of this elite collection, Casio has pulled out all the stops, releasing a flagship timepiece that completely bridges the gap between hyper-engineered dive utility and haute horlogerie.
The G-SHOCK Mr G Frogman commands a premium retail price of £7600, entirely redefining what an analog-digital tool watch can be. Inspired by the “brinicle”—the breathtaking, freezing pillars of ice that form exclusively in polar seas—this limited edition of just 800 pieces worldwide showcases an exceptional union of traditional Japanese artisan craft and unstoppable structural brawn.
Gemstone Craft on a Super-Hard Alloy
The undisputed centerpiece of this special MR-G Frogman is its mesmerizing, light-catching bezel.

Evoking the swirling geometry of polar ice formations, the bezel is fashioned from COBARION—a super-hard cobalt-chromium alloy renowned for achieving a mirror-smooth finish.

Sculpting this unforgiving material requires the hand of a master, specifically the highly respected Japanese cutting and polishing artisan, Komatsu Kazuhito.
“Utilizing a complex vortex facet-cutting technique typically reserved for precious gemstone arts, Kazuhito hand-cuts and polishes each bezel to reflect light in incredibly intricate, spiraling patterns.”
The finished metal surface is subsequently coated via an Arc Ion Plating (AIP) process to yield a deep, oceanic blue tone with immense visual depth. Because of the sheer intensity of this manual cutting process, only a handful of these bezels can be produced per day, making each piece genuinely rare.

Adding to this brilliant gleam, the two asymmetric front case screws are set with 57-facet round brilliant-cut, lab-grown blue sapphires that shimmer in unison with the faceted bezel.
The Anatomy of an ISO 200M Diver
Beneath its artisanal skin lies an incredibly advanced, shock-resistant architecture specialized for heavy-duty diving. The watch is built from an intricate matrix of over 70 individual exterior components, predominantly machined from Ti64 titanium alloy. This lightweight, rust-resistant chassis delivers a full ISO 200-meter diving water resistance rating.
* Case Material: High-strength Ti64 Titanium Alloy
* Bezel Composition: Hand-faceted COBARION with blue AIP coating
* Structural Security: Clad Guard Structure & Dura Soft rubber buffers
* Collector Status: 800 pieces worldwide, celebrating the MR-G 30th Anniversary
* Glass: Anti-reflective sapphire crystal (front) & vapor-deposited sapphire (back)
Protection is integrated into the core design. The brand’s proprietary Clad Guard Structure incorporates protective elements directly into the crown and buttons to absorb brutal side impacts.

The screw-lock crown features specialized Dura Soft rubber buffering components, meticulously engineered so that the engraved MR-G logo always aligns perfectly horizontally when fully tightened.

Flipping the timepiece over reveals a screw-lock titanium case back paired with blue vapor-deposited sapphire crystal, proudly displaying the iconic engraved FROGMAN diving frog character and its unique serial number.
Readability and On-the-Fly Versatility
A professional dive instrument lives and dies by its underwater clarity. The dial face is treated with a sandblasted, matte black finish to eliminate glare, providing a stark backdrop for the oversized, lightweight carbon fiber hands and hand-painted Neobrite indices.

For immediate reference, the 0-to-20 minute indicators are prominently raised, allowing divers to track critical time zones instantly.

To ensure this flagship timepiece transitions seamlessly from ocean depths to dry land, G-SHOCK includes two premium, quick-interchangeable strap options:
- White Dura Soft Fluoro Rubber Strap: A flexible, comfortable band engineered for exceptional resistance to stains, discoloration, and chemical aging.
- Titanium Bracelet: A gleaming, deep-layer hardened option equipped with an extendable link system meant to slide effortlessly over a thick neoprene wetsuit.
Swapping between the two is incredibly efficient, requiring the user to simply depress buttons on the underside of the lugs to release the side pins.

At £7600, the G-SHOCK Mr G Frogman isn’t just a tough watch; it is a stunning piece of wearable art that pays appropriate homage to three decades of MR-G innovation.
