This limited-edition G-SHOCK is one of Casio's most expensive watches ever, with a hand-cut bezel and just 800 examples worldwide
The new MR-G FROGMAN proves G-SHOCK can do haute horology, too
Casio has recently unveiled one of the most ambitious G-SHOCK watches it has ever produced.
Created to celebrate the 30th anniversary of the premium MR-G collection, the new MRG-BF1000EB takes the already luxurious FROGMAN diver and pushes it even further into the world of fine watchmaking.
Limited to just 800 individually numbered pieces worldwide, the anniversary edition is inspired by the "brinicle," a rare underwater ice formation that develops beneath polar seas.
Casio has translated the phenomenon into the watch's construction, with a dramatic faceted bezel designed to mimic the twisting columns of frozen seawater.
That bezel is arguably the star of the show and is made from COBARION, a cobalt-chromium alloy that's significantly harder than titanium, before being hand-cut and polished by Japanese artisan Kazuhito Komatsu.
The blue finish is achieved using arc ion plating, while the two exposed front screws are each topped with a 57-facet lab-grown blue sapphire, giving the industrial-looking dive watch an unexpectedly jewellery-like finish.
Luxury without compromising the tool-watch credentials
The watch is ISO 200m dive-certified, solar-powered, and equipped with Bluetooth connectivity, Multi-Band 6 radio timekeeping, tide information, dive logging, and full analogue dive functions.
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It also ships with both a white Dura Soft rubber strap and an interchangeable titanium bracelet, complete with a dedicated tool for swapping between the two.
The commemorative details continue on the reverse, where the titanium case back features a sapphire crystal insert engraved with the iconic FROGMAN diving frog, "MR-G 30TH" branding and an individual serial number confirming each watch's place within the 800-piece production run.
Casio has even commissioned a bespoke presentation case with Japanese luggage specialist Proteca, reinforcing that this is as much a collector's piece as it is a professional dive watch.
Of course, exclusivity comes at a price. The MRG-BF1000EB retails for $9,500 in the US (~£7,087 / €8,313 / AU$13,699), making it one of the most expensive production G-SHOCK watches ever released.
Even so, with only 800 examples being made, it's unlikely to stay available for long.
You can learn more about the watch and sign up for notifications at Casio.

Matt Kollat is a journalist and content creator for T3.com and T3 Magazine, where he works as Active Editor. His areas of expertise include wearables, drones, action cameras, fitness equipment, nutrition and outdoor gear. He joined T3 in 2019.
His work has also appeared on TechRadar and Fit&Well, and he has collaborated with creators such as Garage Gym Reviews. Matt has served as a judge for multiple industry awards, including the ESSNAwards. When he isn’t running, cycling or testing new kit, he’s usually roaming the countryside with a camera or experimenting with new audio and video gear.
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