G-SHOCK 2500 Series: the original, rethought in hands

In 1983 a small square watch with a digital screen set out to survive being dropped, and in doing so it gave G-SHOCK its whole identity. More than four decades later, the G-SHOCK 2500 Series asks a question that sounds simple and isn't: what would that first watch, the DW-5000C, look like if it were rebuilt today with no screen at all? The answer arrives in Australia on 7 November 2026. It's nine watches, three builds and one very clever date window, and we think it's the most interesting analogue G-SHOCK in years.

That's a big claim for a brand that releases new models almost constantly. But the 2500 isn't a colour drop or a collaboration. It's a new case, a new movement made for this series alone, and a genuinely new way of putting digital-style functions onto an analogue face. It also comes from a lineage most watch people already love.

From square screen to octagon

The family tree reads like a sum. Start with the pioneering spirit of the 5600, the direct descendant of that first square DW-5000C. Add the octagonal design language of the 2100, the slim eight-sided G-SHOCK the internet affectionately nicknamed the "CasiOak" for its nod to a certain Swiss icon. Express the result in pure analogue form, and you get the 2500.

If you know the 2100, you'll recognise the silhouette immediately: the eight-sided bezel, the integrated band, the compact, slightly architectural profile. Look closer, though, and things have softened. The case is built from gentle curved surfaces rather than hard planes, so as light moves across it you get a continuous gradient of shadow instead of sharp highlights. The squared-off DNA of the original is still there. It's simply been rounded and refined.

That play of light is the whole point. The design concept behind the series is "Depth in Shadow", and it shows up everywhere: in the delicately textured hands, in the dimensional dial, in the way the raised indexes throw tiny shadows of their own. The 2500 is built around the idea of actually reading time, and what we gain from engaging with time in analogue. It sounds lofty. On the wrist, it translates into a watch that looks a little different every time you glance at it.

The movement inside was developed specifically for this line and is made at Yamagata Casio, the factory known as G-SHOCK's "mother factory". For a range that starts at the accessible end of the brand, that's a meaningful detail.

Going analogue, without going soft

Why drop the screen at all? Part of the argument is old-fashioned and, we'd say, correct. With hands, you don't read the time so much as sense it. A glance at where the minute hand sits tells you how much of the hour has gone and how much is left, no number-crunching required. The 2500's hands, indexes and even the depth of its dial have been shaped around that glance.

The layout follows a "two-eye" arrangement: a dedicated small seconds subdial at 9 o'clock and a date window at 3. The asymmetry gives the dial a slightly instrument-like character that the square digitals never had. The hands use a parallel-line design that echoes the raised bar indexes and the lines of the case, so the whole face reads as one coherent object. Neobrite lume on every model keeps it legible after dark.

None of this comes at the expense of toughness. Every 2500 is shock resistant and water resistant to 200 metres (20 bar), with mineral glass across the range. Set aside the ornamental, refine the essentials: that was the brief, and it's a fair summary of what's on the wrist.

The date window that does more

This is the 2500's headline idea, and it's the one we keep coming back to. At 3 o'clock sits a fan-shaped window with three cells. It's called Multi-Mission Date, which undersells how neat it is.

Most of the time it shows the date. Switch to another function, though, and the same window changes job. In stopwatch mode it shows the elapsed minutes. When you're setting the watch, it shows setting information. It's a small piece of digital thinking hidden inside a purely analogue display, and it means the dial never has to give up space to a second subdial or a screen. The time stays with the hands; everything else passes through one small window.

The window is coloured to match the dial, too. That keeps contrast low and leaves your eye free to go to the hands first, which is exactly where it should go.

The other quiet win is the calendar. Set the day, month and year once, and the 2500 runs a full automatic calendar. No winding the date forward after a 30-day month, no correction in February, no fiddling in a leap year. On an analogue watch at this level, that's rare.

The stopwatch measures elapsed time up to 29 minutes 59 seconds, with the small seconds hand doing the seconds. There's a hand-shift function for moving the hands clear when you need to see what's underneath, and a seconds-hand sleep function that lets you stop the small seconds hand whenever you like. Pausing it cuts power consumption and stretches battery life, which is an unusually practical feature to find on a dial this clean.

A hand that's allowed to move

Here's the problem every tough analogue watch has to solve: hands are fragile. A hard knock can shift or bend them, and a G-SHOCK that can survive a drop but loses its minute hand isn't much of a G-SHOCK.

The 2500's answer is a magnetic holding structure. Rather than being fixed directly to its shaft, the minute hand, known as the Shock Release Hand, is held in place by magnetic force. When an impact comes, the hand can absorb and spread it rather than taking it head-on.

We like that this comes with an honest caveat. Because the hand is held magnetically, it can shake a little with a bump or vibration, and straight after an impact it may sit briefly out of position. Give it a few minutes and it returns to exactly where it should be. If you notice it, that's not a fault. That's the system working as designed.

There's a more poetic expression of the same toughness on the small seconds hand. Its tail carries the Shock Resist mark, and as the hand ticks through each second, the mark ticks with it. It's a tiny reminder of G-SHOCK's origins, and a visual cue that the shock-resistant construction is quietly at work. It's the kind of detail you'll notice on day three, not day one, and it's all the better for it.

How it wears

At 44.5 mm across in resin and 43.8 mm in the metal-bezel versions, with heights of 12.7 mm and 12.9 mm, the 2500 sits on the compact side of the G-SHOCK spectrum. Every model measures 46.7 mm from top to bottom, so it stays tidy on a wide range of wrists, and it slips under a shirt cuff without the usual G-SHOCK negotiation.

Weight is where the three builds really part ways. The resin GAC2500 comes in at just 47 g, the sort of watch you forget you're wearing. The metal-bezel GMC2500 on its resin band is 68 g, with a touch more presence. The GMC2500D on its steel bracelet is 138 g, and you'll feel every gram of it in a good way.

Each build has its own dial story too. The resin models use a resin dial and indexes with G-SHOCK's three-dimensional design, which makes them crisp and easy to read. The metal-bezel models move to brass dials, treated to either a sunray or a honed finish depending on the colour, so some flash in the light and others stay soft and matte. On the bracelet models, a horizontal hairline finish runs from the bezel across the band, which makes the head and bracelet read as one continuous piece of metal.

The full lineup

Nine watches, three builds. Here's how we see each one.

Resin: the purist's 2500

The four GAC2500 models are all resin, with a bio-based resin case and band, and they're the most direct expression of the idea. Light, tough and monochrome, they're the 2500 at its most honest.

GAC2500-1A: black

The GAC2500-1A is black on black: black dial, black case, black band. It's the most classic G-SHOCK look in the range and, for us, the most likely to become a daily default. The all-dark treatment also makes the dimensional dial easy to appreciate, because the raised indexes do all the talking.

GAC2500-3A: dark green

The GAC2500-3A goes dark green from dial to band. It's a colour with a slightly utilitarian, field-watch edge, and it's surprisingly versatile. As the lifestyle shot below shows, it's just as happy with a suit as it is with a weekend jacket.

GAC2500-7A: white

The GAC2500-7A is the summer one. All white, it shows off the "Depth in Shadow" idea better than any other model, because on a pale surface every curve and raised index casts a visible shadow. Clean, bright and very easy to read.

GAC2500-9A: yellow

The GAC2500-9A is the statement piece of the resin quartet: yellow throughout. G-SHOCK has always been good at bold colour, and on a minimal analogue dial it feels playful rather than loud. If you want the 2500 to be a conversation starter, this is the one.

Metal bezel on resin: the sweet spot

The GMC2500 models pair a case of resin, bio-based resin and stainless steel with a textured bio-based resin band. The metal bezel and brass dial lift the look considerably, while the textured band keeps a sporty contrast against the metal head. All three come on a black band.

GMC2500-1A: black dial

The GMC2500-1A puts a black brass dial inside a steel octagon on a black textured band. Steel catching the light around a dark dial is exactly the contrast the design is built for. If we had to pick one 2500 for most people, this might be it.

GMC2500-1A8: silver dial

The GMC2500-1A8 swaps in a silver dial over the same black band. Silver against steel gives it a lighter, almost dressy quality, while the black band pulls it back towards the sports end. It's the most understated of the metal models.

GMC2500G-9A: gold dial

The GMC2500G-9A pairs a gold dial with a gold-tone bezel on a black band. Here, gold and black land somewhere between retro and luxe. It's the most extroverted of the nine, and we suspect it'll be the one people ask about.

Steel bracelet: the dressy end

The two GMC2500D models move to a stainless steel bracelet with a one-touch three-fold clasp. The case is the same resin, bio-based resin and stainless steel build as the GMC2500, and the horizontal hairline finish running from bezel to bracelet gives them the most solid, cohesive look in the range.

GMC2500D-1A: black dial

The GMC2500D-1A is a black brass dial on silver-tone steel, and it's the 2500 that most directly invites comparison with the integrated-bracelet sports watches the 2100 once winked at. At 138 g, it has real wrist presence. It's the one for the office, and for anyone who wants a single tough watch that can dress up.

GMC2500D-1A2: blue-grey dial

The GMC2500D-1A2 has a blue-grey dial on the same steel bracelet. It's a quieter, cooler colour than black, and a natural partner for brushed steel. Of the two bracelet models, this is our pick.

Our take

The 2500 isn't trying to replace the 2100, and it isn't trying to out-feature the big digital G-SHOCKs. It's doing something more focused: taking the original G-SHOCK idea of a simple, practically indestructible watch and translating it into the language of hands. The Multi-Mission Date is properly clever, the magnetic minute hand is a smart, honest piece of engineering, and the case and dial reward a closer look.

It's also a range with genuine choice. The resin models are light, bright and unapologetically G-SHOCK. The metal-bezel models are the sweet spot. The bracelet models are as grown-up as G-SHOCK gets at this end of the line. The common thread is a watch built for people who like clean lines and considered detail, and who want one watch that moves easily between casual and smarter dressing.

Specifications

	Resin (GAC2500)	Metal bezel, resin band (GMC2500, GMC2500G)	Steel bracelet (GMC2500D)
Case size (L × W × H)	46.7 × 44.5 × 12.7 mm	46.7 × 43.8 × 12.9 mm	46.7 × 43.8 × 12.9 mm
Case materials	Resin, bio-based resin	Resin, bio-based resin, stainless steel	Resin, bio-based resin, stainless steel
Band	Bio-based resin	Textured bio-based resin	Stainless steel, one-touch three-fold clasp
Weight	47 g	68 g	138 g
Fits wrist sizes	145–215 mm	145–215 mm	150–205 mm
Glass	Mineral	Mineral	Mineral
Water resistance	200 m (20 bar)	200 m (20 bar)	200 m (20 bar)
Accuracy	±15 sec/month	±15 sec/month	±15 sec/month
Battery	CR1025, approx. 2 years	CR1025, approx. 2 years	CR1025, approx. 2 years
Functions	Multi-Mission Date with full auto-calendar; stopwatch (29'59"); hand shift; seconds-hand sleep; Shock Release Hand; Neobrite	Same	Same

Coming 7 November

The G-SHOCK 2500 Series goes on sale in Australia on 7 November 2026. Until then it's coming soon, and every model already has its own page above so you can get acquainted before launch day. In the meantime, explore our wider G-SHOCK range, see what's landed in our new arrivals, or browse our Casio watches.

FAQ

When does the G-SHOCK 2500 Series come out in Australia? It goes on sale on 7 November 2026.

Is the G-SHOCK 2500 digital or analogue? Fully analogue. There's no digital screen. Date, stopwatch minutes and setting information appear in the Multi-Mission Date window at 3 o'clock.

How is the 2500 related to the G-SHOCK 2100? It borrows the 2100's octagonal design and combines it with the spirit of the original square 5600, reinterpreted as a purely analogue watch.

How water resistant is the G-SHOCK 2500? All nine models are water resistant to 200 metres (20 bar) and shock resistant.

What's the difference between the GAC2500, GMC2500 and GMC2500D? The GAC2500 is resin throughout and weighs 47 g. The GMC2500 and GMC2500G add a stainless steel bezel and brass dial on a resin band (68 g). The GMC2500D puts that head on a stainless steel bracelet (138 g).

Why does the minute hand sometimes move after a knock? It's held magnetically so it can absorb impacts. It may shake or shift briefly after a bump and returns to the correct position within a few minutes.

What battery does the G-SHOCK 2500 use? A CR1025, with an approximate life of two years. The seconds-hand sleep function can help extend it.