Casio

GA-2100 (CasiOak)

Name: Casio GA-2100 (CasiOak)
Brand: Casio
Availability: InStock

48.5mm Popular Model Wide Price Range

Low $80

Median $110

High $175

Search GA-2100 (CasiOak) Listings

The Casio GA-2100, nicknamed the “CasiOak,” has captured attention for its octagonal bezel—a nod to luxury icons—paired with Casio’s signature toughness and affordability. Released in 2019, it quickly became a cult favorite for its slim profile, lightweight resin case, and modern analog-digital display. The GA-2100’s design bridges streetwear sensibility and practical utility, making it a staple for collectors seeking everyday versatility with a twist of style history.

Reference numbers like GA-2100-1A1 (all-black stealth), GA-2100-4A (red), and GA-2100-1A (black with white accents) drive demand based on colorway scarcity and regional releases. Limited editions and early runs tend to command higher prices, especially those with unique dial or strap colors. The slim 11.8mm case height and 48.5mm width wear smaller than specs suggest, appealing to those wanting presence without bulk.

The Carbon Core Guard structure keeps weight down while boosting durability, and the reliable module 5611 quartz movement offers a 3-year battery life with world time, stopwatch, and 200m water resistance. When buying, prioritize condition—scratches on the resin bezel or faded indices can affect value, as can missing original packaging for sought-after editions. The CasiOak’s broad appeal means prices fluctuate, but its blend of design pedigree and everyday performance keeps demand high.

What owners love

The slim, lightweight profile and octagonal bezel give it a unique G-Shock look that stands out from the usual bulky models, while still fitting comfortably under sleeves.
The analog-digital display is easy to read and appreciated for its clean, minimalist dial design compared to other G-Shocks.
Owners praise the long battery life and reliability of the 5611 module, which rarely needs attention or adjustment.

Common Criticisms

The negative (black-on-black) LCD display is notoriously difficult to read in anything less than perfect lighting.
The pushers are small and recessed, making them hard to operate, especially for those with larger fingers.
Swapping straps is more difficult than expected due to proprietary lugs and limited aftermarket options compared to other Casio models.

GA-2100 (CasiOak)

What owners love

Common Criticisms

Reviews & Videos

Right Now on eBay

Recent Listings

Explore More Casio Watches