Casio ‘CasioNaut’ G-Shock GMC-2500 GAC-2500 Series: Price, Specs, Availability
In what appears to be a follow-up to the mighty “CasiOak,” the rugged Japanese watch brand is expected to release an all-new luxury homage.
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LoaderSave StorySave this storyCommentLoaderSave StorySave this storyThe high-end watch world has an understandable affection for Casio. You can easily rock an iconic, brightly colored F-91W in any meeting with a luxury brand, and you'll get nods of approval. It is, after all, the watch that has graced the wrists of Barack Obama and Napoleon Dynamite.
If not the F-91W, you'd be on similar safe ground sporting the famous “CasiOak” that many G-Shock fans love because of its more than passing resemblance to Audemars Piguet's Royal Oak, which was recently given a similarly affordable makeover by Swatch with the Royal Pop. First introduced in 2019, the wallet-friendly G-Shock GA-2100 earned the nickname largely because of its octagonal case shape, and it is considered by some the definition of attainable luxury.
Now, however, it appears Casio has something genuinely new for the G-Shock line. Leaked on Notebookcheck and Instagram, the upcoming GMC-2500 and GAC-2500 series echo the CasiOak's links to high-end brand AP with more than a passing resemblance to Patek Philippe's Nautilus thanks to prominent shoulders on either side of the case.
Casio did not respond to WIRED's request for comment.
Casio's incoming GMC-2500 G-Shocks …
… have more than a whiff of Patek's Nautilus.
In 1972, legendary watchmaker Gérald Genta suggested an angular stainless steel watch design to Audemars Piguet with a high-end movement inside that would, perversely, be more expensive than gold dress watches. The Royal Oak, and the idea of the luxury sports watch, was born. In 1976, Genta repeated the trick for AP's main competitor, Patek Philippe, to create the now equally famous Nautilus.
According to Notebookcheck, the GAC-2500 series is a resin analog lineup supposedly built from the DNA of the DW-5000C, the very first G-Shock made back in 1983. Stainless-steel versions will be labeled the GMC-2500 series. So far, nicknames like the “CasioNaut” and “CasioTilus” are already being thrown around on Instagram. The leaked four resin colorways in November are expected to be white, black, green, and yellow, and the price is estimated at 20,900 Japanese yen (about $134) each. The metal versions will supposedly retail for about $320.
Patek Philippe's Nautilus was created in 1976, four years after AP's Royal Oak, both designed by Gérald Genta.
Another striking aspect of the CasioNauts, one that helps the comparisons with Patek even further, is that the watches are fully analog, a rarity in a G-Shock. The brand has always had a digital display somewhere on its main ranges, just like the CasiOak does.
A two-eye dial layout means a small seconds subdial on the left and a date window on the right. A Shock Resist mark is on the tail of the seconds hand. These pieces apparently have Casio's Magnetic Holding Structure, so the hands aren't fixed to a shaft but are instead held magnetically in place. When the rugged watch takes a severe smack, the hands can absorb the impact and won't break.
ArrowThe metal GMC-2500 dimensions are supposedly 46.7 x 43.8 x 12.9 mm (H x W x D), with the GAC-2500 a shade thinner at 46.7 x 44.5 x 12.7. It looks like the metal versions will offer a choice of colors, along with the bracelet or strap options. The rumored release date for all of the CasioNauts is November, so set your watch.
According to legend, the inspiration for the Nautilus shape was the portholes on transatlantic ocean liners, and the idea struck Genta while he was having dinner at a hotel. Genta supposedly saw Patek executives sitting in a corner on the opposite side of the restaurant. It took him just five minutes to sketch the watch that would later become an icon.
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Jeremy White is senior innovation editor at WIRED, overseeing gear coverage, with a focus on EVs and luxury. He also edits gear for the US and UK print editions. Prior to WIRED, he was a digital editor at the Financial Times and tech editor at Esquire in the UK. And ... Read MoreSenior innovation editorInstagramTopicsCasiowatchesluxurydesignDermstore Coupons: 25% Off for 2026Score major savings on premium skincare, hair care, and cosmetics with these verified Dermstore discount codes and rewards offers.Boutayna Chokrane Top Maytag Promo Codes: 15% OffUpgrade your home for less with these verified Maytag discount codes, military savings, and limited-time closeout offers on washers, dryers, and more.Matthew KorfhageAltra Running Promo Codes and Deals September 2026Score big savings on Altra Running shoes with up to 50% off sale styles, 20% off select models, 10% off your first order when you sign up, plus free standard delivery on every purchase.Boutayna Chokrane Columbia Promo Codes: 15% Off for September 2026Explore current Columbia deals on jackets, outdoor gear, and apparel. Find active Columbia promo codes, student discounts, and free shipping offers to save on your next adventure.Boutayna Chokrane Uplift Desk Coupon Codes: Save up to $570Upgrade your home office with the best Uplift Desk discount codes. Save on standing desks, ergonomic chairs, and accessories during the Spring Setup Sale.Nicole KinningChewy Promo Codes: $20 Off September 2026Explore Chewy coupon codes for $30 off, $20 off your first order $49, 50% off pet food, and more September 2026 discounts.Molly Higgins20% Off With a Brooks Promo Code for 2026Enjoy 20% off your first order with a Brooks coupon code, plus top discounts and deals on our favorite Brooks running shoes.Boutayna Chokrane Top Design Within Reach Promo Codes for September 2026Get 30% off, 20% off, and free shipping with our Design Within Reach coupon codes, plus up to 50% off furniture with these special discounts. Nena Farrell Top Litter-Robot Promo Codes: $150 Off Bundles, $50 Off the Starter Bundle, and MoreGet the latest Litter-Robot Discounts on Litter-Robot self-cleaning litter boxes, accessories, and more.Molly HigginsTuft & Needle Promo Codes for September 2026Save 30% on best-selling mattresses with our top Tuft & Needle coupon codes. Nena Farrell The Smart Speakers We Can’t Stop Talking ToLooking to add a smart speaker to your house? Here’s which to choose, whether you’re an Alexa, Siri, or Gemini fan. Nena Farrell Paramount+ Coupon Codes and Deals for August 2026Save on streaming with the latest Paramount+ promo codes and deals, including 50% off subscriptions, free trials, and more.Molly HigginsWired CouponsCode promo Canon10% Off Canon Promo Code + Up to 30% Off
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