New Casio G-Shock models support the Charles Darwin Foundation – with a surprise on the dial!

We're big fans of the Casio G-Shock here at T3. These lovable watches are fun and funky, yet equally rugged and dependable when needed.

Since first appearing in the 1980s, the G-Shock range has gone from strength to strength, earning legions of fans in the process. These days, the range is bigger than ever before, with everything from no-frills, budget-friendly watches, to metal-clad pieces with four-figure price tags.

The brand has just unveiled a new collection produced in partnership with the Charles Darwin Foundation. That's not the first time we've seen that collaboration bare fruits, with a range of 5600 models unveiled a little over a year ago.

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This time, it's the octagonal 2100 model which gets the evolutionary treatment. The two models on offer feature similar black cases, though one is outfitted with red accents and a matching strap, while the other opts for a clean white.

Specs-wise, this is a fairly standard watch for the brand. The regular 2100 is upgraded with Tough Solar and Bluetooth connectivity, ensuring accurate timekeeping and great battery life. Elsewhere, you'll find other features like a digital display at the 4:30 position, and a mode dial at 9 o'clock.

It's that mode dial where the eagle-eyed will spot the first big change on this model. Each hand has been swapped out to depict a character from the Galapagos Islands – an iguana on the red model, and a penguin on the white.

It's worth noting that the central hands – showcasing the hours and minutes – also get a slight change with white tips, while the dial itself has a pattern on it. You'll also find nods to the collaboration on the case back, the strap and the buckle.

Priced at $170 (approx. £138 / AU$274) these are a little more pricey than standard variants of the watch. Still, with a neat collaboration and some cool added functions, it's certainly a price worth paying for the right buyer.