
In 1970, a five-man team embarked on an expedition to the top of Mount Everest. Each of them wore a Certina DS-2 Chronolympic – a resilient chronograph designed to brave the elements and keep accurate time.
On the way down, one member – Yuichiro Miura – descended 2,000m on skis, reaching speeds of 100 miles per hour. It was later immortalised in a documentary called "The Man Who Skied Down Everest".