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New Casio G-Shock gray-black Ron Herman GA-2100 collab has already sold out

The Casio G-Shock x Ron Herman collab (pictured) comes with a black and gray color scheme. (Image source: Ron Herman)
The Casio G-Shock x Ron Herman collab (pictured) comes with a black and gray color scheme. (Image source: Ron Herman)
The new Ron Herman x Casio G-Shock GA-2100 collab has already sold out on Ron Herman's official website. The Japan-exclusive release features a black and gray CasiOak design with limited availability and global interest.

The newly launched Casio G-Shock GA-2100 collaboration with California lifestyle brand Ron Herman has already sold out on the brand’s official web store, just days before its official shipping date. Listings on Ron Herman’s Japanese site now display the item as "Sold Out."

This limited edition GA-2100 was not the first collaboration between Casio and Ron Herman. It continued a partnership that has often given us clean, surf-inspired designs. This particular model features a black and gray color scheme with a stealthy matte finish, subtle white accents, and branding on both the caseback and dial. Like other GA-2100 models, it sports a carbon core guard structure and an analog-digital hybrid layout.

At ¥23,100 (about $162), the watch’s pricing was in line with previous limited G-Shock drops, and it came equipped with practical features like 20 ATM water resistance, a 1/100-second stopwatch, five daily alarms, and world time support for 48 cities.

Despite the watch being labeled as Japan-only, fans worldwide were hoping to get access through Worldshopping’s international shipping service. However, with Ron Herman’s stock already depleted, international buyers may now have to rely on third-party resellers or auction platforms if they missed the original drop.

Casio has yet to comment on whether additional stock will be made available in the future.

Buy the Casio G-Shock GA-2100-1AJF on Amazon.

The watch sold out shortly after pre-orders opened at 12:00PM Japan time. (Image source: Ron Herman)
The watch sold out shortly after pre-orders opened at 12:00PM Japan time. (Image source: Ron Herman)

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2025 05 > New Casio G-Shock gray-black Ron Herman GA-2100 collab has already sold out
Anubhav Sharma, 2025-05-10 (Update: 2025-05-10)