2019 IWC Aquatimer Chronograph Charles Darwin Complete Set

This is a milestone piece, not just another Aquatimer. It was the first watch in IWC's entire history to use a bronze case, which alone makes it a reference collectors single out from the rest of the line. Where the Aquatimer family is overwhelmingly steel, this edition trades cool-toned modernity for warmth and story. The bronze is a deliberate homage to HMS Beagle, the ship that carried Darwin to the Galápagos; in that era, bronze was the metal of choice for portholes, fittings, and nautical instruments precisely because it resists corrosion at sea.
The real differentiator is that the watch is designed to change. Bronze develops a patina over time, darkening and shifting with wear and exposure, so no two examples age the same way. That bronze tone is echoed in the luminescent material on the hands, indices, and quarter-hour markers, tying the aesthetic together. Choose this one if you want a genuine 300m professional diver with a serious in-house chronograph and a strong expedition narrative, plus the appeal of an object that becomes uniquely yours as it patinates rather than staying factory-fresh forever. It's the characterful, collectible outlier in a lineup of more conventional steel tool watches.

Key details — mechanical features

• Movement: IWC-manufactured Caliber 89365, a self-winding mechanical chronograph movement
• Power reserve: approximately 68 hours
• Chronograph layout: the signature IWC design that combines elapsed chronograph hours and minutes in a single totalizer at 12 o'clock for at-a-glance reading, with running small seconds and a date window at 3 o'clock
• Bezel: IWC's SafeDive system, an external rotating bezel that mechanically drives a protected internal rotating dive-time bezel
• Case: 44mm bronze, which develops a unique patina over time
• Crystal: convex scratch-resistant sapphire with anti-reflective coating on both sides
• Dial: black with luminescent hands and markers
• Water resistance: 300m (30 bar)
• Strap: black rubber with IWC's patented quick-change system and a bronze buckle, 22mm width