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Rolex Revisits the Making of the Deepsea Challenge Experimental Watch

This is an older upload from Rolex’s own channel, dating back to 2012, documenting how the brand built its Deepsea Challenge, the experimental watch strapped to the manipulator arm of James Cameron’s submersible during his solo dive to the Mariana Trench. It is a worthwhile watch for anyone curious about the engineering behind Rolex’s deepest ever dive test, long before the modern Deepsea Challenge collection existed.

Why this watch, on this wrist?