Casio’s MR-G line turns 30 this year, and to mark the milestone, the brand just dropped what might be the most exquisite, and most expensive, G-Shock Frogman ever made. Meet the MRG-BF1000EB-1A: a limited-edition dive watch designed around a rare polar-sea phenomenon and finished by one of Japan’s most celebrated gemstone artisans. It’s still a Frogman at heart, ISO-rated for 200 meters and built from a tangle of shock-resistant titanium parts, but the rest of the watch reads more like a piece of fine jewelry than a tool.
Price: From ¥1,210,000 (about $7,600)
Where to Buy: CASIO
The design takes its cues from the “brinicle,” the eerie pillar of ice that forms beneath frozen polar seas, and that motif drives every visual choice, from the hand-cut COBARION bezel to the lab-grown blue sapphires set into the front-screw accents. Only 800 pieces will be made worldwide, each with its own serial number and a commemorative “MR-G 30TH” engraving on the back. It’s already listed at ¥1,210,000, roughly $7,600, making it the priciest G-Shock currently in the lineup and arguably the most ambitious Frogman Casio has ever built.
Hand-cut COBARION bezel: a brinicle on your wrist
The headline feature is the bezel. Casio used COBARION, an alloy roughly four times the hardness of titanium that finishes with a cool, almost-platinum gleam, then handed it to Japanese gemstone artisan Komatsu Kazuhito, the craftsman behind Hana Shinju faceted pearls and the first Japanese artisan to win first prize at the U.S. “Gemmy” gem-cutting awards.
Komatsu hand-cuts what Casio calls “vortex facets” into the bezel, a process usually reserved for gemstones, so each piece throws light in spiraling, asymmetric patterns. Because the technique is so slow on a super-hard alloy, only a handful of bezels can be finished per day. The surface then gets a blue arc ion plating (AIP) treatment that shifts in tone as light moves across it, mimicking the cold glow of a polar brinicle.
To complete the look, the two front screws, a signature of the Frogman’s asymmetric face, are each set with a 57-facet, brilliant-cut lab-grown blue sapphire.
MR-G Frogman build: titanium, sapphire, and shock resistance
The case, case back, crown, buttons, and screws are made from Ti64 titanium alloy. The screw-lock case back is press-fit with blue vapor-deposited sapphire crystal and finished with a titanium carbide (TiC) coating.
Casio’s MR-G Clad Guard layout wraps the crown and pushers in Dura Soft elastomer pads, so impact never quite reaches the module. All in, more than 70 internal parts work together to hit the ISO 200 m diver’s rating, with magnetic resistance layered on top.
The face is sandblasted to a flat, matte black so the Neobrite-painted indexes pop in low light. Minute markers 0–20 are raised to help divers track dive-time ranges at a glance, and the hour and minute hands are made from lightweight carbon to allow oversized, legible shapes.
MRG-BF1000EB-1A specs: size, battery, and dive features
The MRG-BF1000EB-1A measures 56 × 49.7 × 18.6 mm and weighs 132 g on the Dura Soft fluoro rubber strap, and the rest of the spec sheet is just as serious. You get ISO 200 m water resistance with shock and magnetic resistance, a sapphire crystal with anti-reflective coating, and Tough Solar charging that runs about five months on a full charge with normal use, or 29 months stored in the dark with power-save on. Timekeeping is handled by Multi-Band 6 radio calibration and Bluetooth pairing with the Casio Watches app, so the time stays correct without any input from you.
For diving, there’s a dedicated mode with 1-second timing up to 1:59:59, surface time tracking up to 24 hours, and storage for 30 dive logs, plus a tide graph that covers roughly 3,300 global points. Add dual time, a full auto-calendar, a stopwatch, a 24-hour countdown timer, and an LED Super Illuminator with afterglow for night dives.
A neat touch: switch to dive mode and the hour and minute hands stack into one indicator, so you read elapsed dive time as a single, unambiguous sweep. Three dual-coil motors drive each hand independently to make that handoff fast.
Casio Watches app: dive logs, tide graph, and more
Through the Casio Watches app, you can set tide data for around 3,000+ locations, review dive logs with detailed analysis, swap world time cities across roughly 300 options, check watch status, and use phone finder. The app also unlocks a Premium Production Line certificate for the watch. The MR-G module itself gets a gold-plated retainer plate, the kind of detail no one but the watchmaker sees, which is very much the MR-G mood.
Dura Soft strap, titanium bracelet, and Proteca box
Casio bundles two interchangeable bands: the white Dura Soft fluoro rubber strap pre-mounted on the case, plus a pure titanium bracelet with deep-layer hardening and a TiC coating. The bracelet extends enough to wear over a wetsuit and uses a quick-swap system: press the button under the lug, slide out the side pin, and the band comes off in seconds.
The set ships with a band-mounting tool inside a custom commemorative storage box co-developed with Proteca, the Japanese premium luggage brand. It’s the kind of unboxing that almost justifies the price tag.
Casio MRG-BF1000EB-1A price and release date
In Japan, the MRG-BF1000EB-1A drops June 12, 2026 at ¥1,210,000 (about $7,600), setting a new high-water mark for production G-Shocks, with a wider international rollout through June 2026. Production is capped at 800 serialized pieces worldwide.
Price: From ¥1,210,000 (about $7,600)
Where to Buy: CASIO
Is a $7,600 G-Shock absurd? Probably. But that’s the point. The MR-G line has spent 30 years pushing G-Shock into haute horology territory, and the MRG-BF1000EB-1A, a dive-rated, solar-powered, Bluetooth-connected Frogman finished by a master gem cutter, is the loudest argument yet that “tough” and “luxury” can share the same wrist.
2-Pack LED Video Light Kit, NiceVeedi Studio Light, 2800-6500K Dimmable Photography Lighting Kit with Tripod Stand&Phone Holder, 73" Stream Light for Video Recording, Game Streaming, YouTube
(as of June 3, 2026 04:39 GMT -05:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
