The GA-2100 is likely the G-Shock you've heard of under the nickname "CasiOak" —a clear reference to the Audemars Piguet Royal Oak, whose octagonal bezel it mimics. This model literally reignited the global craze for G-Shock starting in 2019, and in 2026 it remains the gold standard in the lineup.

With its ultra-durable Carbon Core Guard resin case and slim profile (just 11.8 mm), it manages to be both a true sports watch and an everyday fashion accessory. The anadigital movement combines analog hands with a digital display for quick and easy time-reading in any situation.

The DW-5600 is the forerunner, the original, and the number one G-Shock in the brand’s history. Its iconic square shape has remained virtually unchanged since 1983, and that is precisely what makes it a cult classic beloved by collectors and fans of vintage style. Its 43-mm case is compact and fits under a cuff.

Fully digital, the DW-5600 stands out for its instant readability and versatility: stopwatch, countdown timer, alarm, and world time. It’s also the lightest and most discreet G-Shock on the wrist—ideal for those who want a true sports watch without the bulk.

The GW-M5610 takes the timeless design of the DW-5600 and adds Casio’s two most valuable technologies: Tough Solar (charging via light, even artificial light) and Multi-Band 6 (automatic radio synchronization with global time signals). The result: a G-Shock that never needs a battery and always displays the exact time, down to the second.

This is the quintessential "maintenance-free" version. For travelers, field workers, and anyone who wants a reliable watch they never have to worry about, this is the model to choose.

The GM-2100 is the high-end version of the CasiOak. Casio has replaced the resin bezel with a solid metal bezel featuring a polished and brushed finish, giving it a much more striking presence on the wrist than its little brother. The result is striking: you immediately recognize the iconic G-Shock silhouette, but with a level of craftsmanship that rivals watches two to three times as expensive.

The BB (Black x Black) version takes the concept even further with an all-black ion-plated finish that’s understated and ultra-elegant. It’s the G-Shock you can wear just as easily on a hike as you can at dinner.

The GM-2110D is the top-of-the-line model in the CasiOak 2100 series available at Club de la Montre. Here, both the case and the band are made of stainless steel —a rare combination in the G-Shock lineup. The internal resin structure maintains shock absorption, while the metal outer shell provides the comfort and weight characteristic of high-end watches.

The silver-and-gold two-tone design of the 2AER model adds a sophisticated touch that clearly moves away from the "hardcore sport" look and leans more toward a rugged dress watch. If you're looking for a G-Shock you can wear with a suit, this is the one.