Since its launch in 1971, the Rolex Oyster Perpetual Explorer II has established itself as the worthy successor to the Explorer, sharing its ability to withstand extreme conditions while accompanying those who push the boundaries of knowledge. Designed for people who explore the most remote corners of the planet, this model stands out for its 24-hour display, an essential feature when the distinction between day and night is no longer obvious.

It is a watch created for speleologists, volcanologists and explorers who challenge some of the world's harshest environments. Its combination of durability, precision and outstanding legibility makes it a reliable tool for those venturing into places where natural conditions test both people and their equipment.

An instrument for distinguishing day from night

One of the Explorer II's most distinctive features is its additional orange hand, which completes one full rotation of the dial every 24 hours and works together with the fixed 24-hour graduated bezel. This system allows the wearer to easily distinguish daytime from nighttime, an essential function in environments where natural light is no longer a reliable reference.

Whether deep inside a cave where darkness is constant or in the polar regions during summer when the sun remains visible for extended periods, this display provides a clear indication of the daily cycle. In addition, the watch incorporates a GMT function with an independently adjustable hour hand, further enhancing its practicality.

Legibility designed for the most demanding conditions

The Explorer II places clear and immediate readability at the forefront. Available with either a black or white dial, it features Rolex's exclusive Chromalight display, whose hands and hour markers emit a long lasting blue luminescence that ensures excellent visibility even in complete darkness.

The date window at 3 o'clock is magnified by the iconic Cyclops lens, making it easier to read during extended expeditions. The generous 42 mm Oyster case also provides a wider dial opening, improving the visibility of every indication on the watch.

Built to explore the ends of the Earth

The Explorer II's Oyster case provides complete protection against water and dust. Crafted from Oystersteel, Rolex's exclusive alloy belonging to the 904L steel family, it offers outstanding resistance to corrosion while maintaining its shine even after intensive use in particularly demanding environments.

The watch is equipped with a scratch resistant sapphire crystal featuring the Cyclops lens over the date, a screw down winding crown with the Twinlock double waterproofness system and water resistance to 100 metres. Together, these features make it a dependable companion for the toughest conditions.

A bracelet designed for comfort and security

The Oyster bracelet, introduced in the late 1930s, remains one of the most iconic designs in the Oyster Perpetual collection. Crafted from Oystersteel with three piece solid links, it combines durability, comfort and timeless aesthetics.

It is fitted with the Oysterlock safety clasp, designed to prevent accidental opening, as well as the Easylink comfort extension system, allowing the bracelet length to be increased by approximately 5 mm for enhanced comfort in different situations.

Calibre 3285, precision and performance

At the heart of the Explorer II is the calibre 3285, a self winding mechanical movement entirely developed and manufactured by Rolex. This movement incorporates the brand's latest innovations and delivers an approximate power reserve of 70 hours.

It features a paramagnetic blue Parachrom hairspring, high performance Paraflex shock absorbers and a bidirectional Perpetual rotor. Its precision of -2/+2 seconds per day after casing meets the standards of the Superlative Chronometer certification, which combines official chronometer certification with Rolex's own testing after assembly.

A companion for those who push the limits

The Rolex Oyster Perpetual Explorer II brings together the essential qualities required by those who explore some of the most challenging places on Earth. Its 24-hour display, exceptional legibility, robust construction and high performance calibre create a watch designed to deliver reliability when conditions become increasingly demanding. More than just a timepiece, the Explorer II is a tool created to accompany those who continue expanding the horizons of human knowledge.