Casio is rolling out a new G-Shock 2500 series (GAC-2500/GMC-2500, resin and metal), expected in November 2026 in roughly 9 colorways starting around $134. It's marketed as the successor to the GA-2100 "CasiOak," but the new 2500's fully-analog octagonal case instead apes the Patek Philippe Nautilus — online commentators have already dubbed it the "CasioNaut."
This GA-2100-7A7JF is the direct CasiOak predecessor the new series succeeds, in stock now through CDJapan.
CASIO G-SHOCK GA-2100-7A7JF
Casio — G-Shock Check on CDJapan →Ships via CDJapan, a Japan-based retailer operating since 1995 — long-time customers frequently praise its careful packaging, and it's rated 4/5 on Trustpilot (460+ reviews).
Casio launched two new compact G-Shock GMA-P2110B watches in the US, retaining the octagonal bezel shape of the 2100 series hardware in a smaller, metallic-ringed case. This GMA-P2100-7AJF is the direct design predecessor sharing that same compact case family.
Casio launched G-Shock's Luxe Black sub-series (GA-2100LXB / GM-2100LXB), a matte-black, metallic-accented reinterpretation of the popular GA-2100 "CasiOak" octagonal-bezel design, rolling out internationally through August 2026. This GA-2100-1A1JF is the base model the new line reworks.
Casio teamed up with streetwear label thisisneverthat on a translucent, glow-in-the-dark G-Shock built on the classic square DW-5600 case. This DW-H5600 shares that same iconic square silhouette, built out with a G-SQUAD smartwatch feature set.
Casio's newest G-Shock, the GD-350S-1, launched in August 2026 with vibration alerts and 200m water resistance, one of five new models the brand quietly rolled out this summer. This GMA-S2100-1AJF comes from G-Shock's broader digital-analog hybrid lineup.