Casio G-Shock GMA-P2100SA-1A1

The Casio G-Shock GMA-P2100SA-1A1 Black takes the brand's beloved octagonal 2100 series and shrinks it down into a more compact, comfortable build without losing any of the design language that made the original such a modern classic. A streamlined all black case gets lifted by vibrant neon yellow accents across the hour markers and watch hands, giving the piece real personality against its otherwise minimal, sporty base. Key resin components in the bezel and band are made from bio based materials, a small but meaningful step toward more sustainable manufacturing. Underneath the design sits a genuinely capable analog digital hybrid module, featuring a 1/100 second stopwatch, countdown timer, world time support across multiple zones, and five daily alarms. Neobrite coating on the hands and phosphorescent detailing keep the watch legible even in low light, while shock resistance and 20 ATM water resistance ensure it holds up to real daily wear. For collectors who love the CasiOak silhouette but want something sized for a slimmer wrist, this compact build delivers the same iconic form in a more wearable package. The Casio G-Shock GMA-P2100SA-1A1 Black carries a retail price of $130.