Casio is set to launch a limited edition G-Shock GA-2100 watch in collaboration with the Californian lifestyle brand Ron Herman. The new model will be released in Japan on May 10, 2025, with shipping starting from May 20.
The watch is priced at ¥23,100 (around ₹12,900), and while it’s mainly for the Japanese market, international buyers can import it using Worldshopping International Shipping, though import charges may apply.
This special edition stands out with its octagonal bezel, a hallmark of the GA-2100 “CasiOak” series, and a gray resin and carbon fiber case. The Ron Herman logo is engraved on the stainless steel back and also appears on the black watch face, which is accented with white and neobrite elements. The matching gray resin band completes the sleek, modern look.
The GA-2100 is known for its shock resistance and carbon core guard structure, offering 20 ATM (200-meter) water resistance-perfect for active lifestyles. It combines an analog dial with a small digital display, features a day-of-the-week dial, world time for 48 cities, a 1/100-second stopwatch, a 24-hour countdown timer, and support for five daily alarms. The white LED backlight ensures readability at night, and the battery lasts three years.
Casio’s GA-2100 line is popular for its slim, tough design and minimalist style, making this limited edition a sought-after piece for collectors and fans alike. While previous collaborations have mostly stayed in Japan, international shipping opens up access to G-Shock enthusiasts worldwide.

If you’re looking for a stylish, durable, and exclusive watch, keep an eye out for the G-Shock x Ron Herman GA-2100-it’s expected to sell out fast!