The Oyster Perpetual Explorer was uniquely introduced in 1953 as a commemoration of an historic event that took place that year. On May 29, 1953, mountaineers Sir Edmund Hillary and Tenzig Norgay took a challenging expedition to the 8,848-metre peak of Mount Everest in Nepal, being the first to reach the summit of the highest mountain in the world. Accompanying the exploration team on this trip were Rolex’s Oyster Perpetual wristwatches, which had already established their reputation as invaluable timepieces that endured tough Himalayan expeditions in the 1930s. Using technical intelligence and observations from these past excursions, Rolex designed the Explorer to be a culmination of the ruggedness and durability of Rolex watches that can survive the roughest of nature’s elements.