Jewelry & Watches · 2100 Octagon
GA2100-1A1
The slim octagonal G-SHOCK that made analog-digital toughness look architectural.
$110
at G-SHOCK
Prices are a snapshot from when this page was built — confirm on the retailer's site.
Story & heritage
Casio's 2100 page identifies the GA2100 line as debuting in 2019 and links the octagonal bezel motif back to the first G-SHOCK while giving the form a slimmer contemporary profile.
Materials & craft
Official G-SHOCK copy highlights Carbon Core Guard structure, an approximately 11.8 mm slim case, shock protection, 200-meter water resistance, and analog-digital functions.
2019Carbon Core Guard11.8 mm profile200 m water resistanceAnalog-digital
How to choose & style
The black GA2100-1A1 is the architectural option: pair it with minimal tailoring, wide trousers, black tees, and monochrome layers where its octagon reads cleanly.
Black-on-blackOctagonal bezelAnalog-digital
