Two new Casio G-Shock x Charles Darwin Foundation watches are on the way. The Japanese watchmaker has already collaborated four times with the science and conservation organization. As a reminder, the 2025 versions were GAB2100DF-1A and GAB2100DF-4A.
Now, Thai retailer Hatyai Nalika has listed two new G-Shock x Charles Darwin Foundation watches on its online store. Model numbers listed are GA-B2100CDF-2A and GW-B5600CDF-4. As with previous products from this collaboration, the theme of each watch is based on an animal that can be found in the Galapagos, where the organization focuses its research.
According to reliable source Geesgshock on Instagram, the G-Shock GA-B2100CDF-2A could be inspired by the blue-footed booby, given its blue and beige color scheme, although that’s just speculation for now. Images of the watch shared by the leaker in a post (below) indicate that this hybrid watch will feature a miniature image of a bird, as was the case with the older GA-B2100DF-1A. Meanwhile, leaked images of the G-Shock GW-B5600CDF-4 indicate that its theme is flamingo. This digital watch has a bright coral resin bezel and watch, a red accent strap loop, and a camouflage frame around the display.
Casio is expected to officially announce the G-Shock x Charles Darwin Foundation GAB2100DF-1A and GAB2100DF-4A watches in December 2026. Based on the release history of previous models, these two products could be launched globally in early 2026.
