Make your collection pop with the Tiff Prism Edition Casioak, a brand new, custom-modified Casio G-Shock GA-2100. Known by enthusiasts as the “Casioak” for its Audemars Piguet Royal Oak–inspired case, this build pairs a black stainless steel bezel, matching Tiff Teal premium rubber strap, and a vapor-deposited glass dial that reflects light in shifting hues, giving each watch a distinct glow and one-of-a-kind look.

This model delivers rugged G-Shock durability while adding a luxury-inspired, head-turning aesthetic that works for collectors and everyday wearers alike.

Key Features

• Brand New – Fully Functional & Factory Tested

• Base Model: G-Shock GA-2100 (2025 release)

• Black Stainless Steel Bezel – Royal Oak Style

• Premium Tiff Teal Rubber Strap – Comfortable & Adjustable

• Tiff Teal Dial with Vapor-Deposited Glass

  • Each watch reflects light differently for a unique radiance

• Luminescent Hands + Backlit Digital Display

• 200m Water Resistance (20 BAR)

• Carbon Core Guard – Shock Resistant

• Day/Date Display, Stopwatch, Timer & World Time Functions

• Includes Original Box, Price/Model Tag, Owner’s Manual & Warranty Card

Condition

• Factory fresh, unused, and fully tested

• Flawless crystal, bezel, and strap

• Professionally modded while maintaining full G-Shock functionality

Size & Fit

• Case Size: 45mm

• Strap Width: 26mm (tapered)

• Fits Wrists: Up to 8" (20.3cm)

Why Collectors Want the Tiff Prism Edition

The GA-2100 is a cult favorite for its slim, lightweight build and legendary toughness. The Tiff Prism Edition enhances that appeal with its black steel case contrast, vibrant teal strap and dial, and vapor-coated glass that glows uniquely in any light. A perfect daily wear watch or collector’s conversation piece.

Shipping & Offers

• Ships same or next business day via USPS or FedEx with secure packaging.

• Combined shipping available on multiple items.

• Best Offer welcomed for serious buyers.

Own the Tiff Prism Casioak – a striking blend of black steel toughness, radiant teal color, and luminous glass. Each watch reflects light differently, so no two are ever the same.