Casio ‘CasioNaut’ G-Shock GMC-2500 GAC-2500 Series: Price, Specs, Availability
Casio appears set to introduce a genuinely new G-Shock design, with leaked images pointing to upcoming GMC-2500 (metal) and GAC-2500 (resin) series that bear a strong resemblance to Patek Philippe's Nautilus, thanks to prominent "shoulders" on either side of the case. This follows the brand's popular "CasiOak" model, which echoes Audemars Piguet's Royal Oak, suggesting Casio is again drawing on iconic luxury watch design cues to create an affordable alternative, fuelling online nicknames such as "CasioNaut" and "CasioTilus". Casio has not responded to requests for comment, so details remain unconfirmed.
According to Notebookcheck, the resin GAC-2500 line is said to draw on the DNA of the original 1983 DW-5000C and will reportedly come in four colourways (white, black, green and yellow) priced around 20,900 yen (roughly $134), while the steel GMC-2500 is expected to cost about $320. Unusually for a G-Shock, the watches are said to be fully analogue, featuring a small seconds subdial, a date window, and Casio's Magnetic Holding Structure, which lets the hands absorb impact without breaking. Both versions reportedly measure around 46–47mm across and 12.7–12.9mm thick, with a rumoured launch in November.
In short
- Leaked Casio G-Shock GMC/GAC-2500 series resembles Patek Philippe's Nautilus
- Resin version tipped at ~$134, steel version at ~$320
- Rare fully analogue G-Shock with shock-absorbing magnetic hands, due November
Explained simply
G-Shock is Casio’s watch line, launched in 1983 with a focus on surviving knocks and tough use. Its designs have sometimes borrowed the look of well-known luxury watches: the “CasiOak”, for example, has a case shape reminiscent of Audemars Piguet’s Royal Oak.
Patek Philippe’s Nautilus is another influential luxury watch design, recognised for its broad case and raised sides, often called “shoulders”. Casio’s reported use of similar features has prompted online comparisons and nicknames, though the watches described are expected to be much less expensive.
The reported models are said to come in resin and metal versions and to use analogue hands, a less common approach for G-Shocks, which are often digital or combine digital and analogue displays. Their appeal may depend on how Casio balances the familiar case shape with its own durability features and accessible pricing.