Environments such as mountain tops, oceans, volcanoes and polar regions have always been experimental terrain for Rolex.
Oyster Perpetual watches accompanied numerous Himalayan expeditions – including the group that Sir Edmund Hillary and Tenzing Norgay Sherpa were part of when they became the first climbers to reach the summit of Everest on 29 May 1953 – and have been worn by explorers venturing to the far corners of the globe, through deserts, at the poles or in the depths of the Earth. In these often harsh and unfamiliar environments, distinguishing day from night can become impossible. For speleologists, who spend days at a time in darkness, or polar expeditions travelling under the midnight sun or through endless night, the Explorer II, with its 24-hour display, is an essential part of their equipment.
