Rolex Explorer II in Oystersteel with an Oyster bracelet features a white dial with an arrow-shaped 24-hour hand and hour markers

This Oyster Perpetual Explorer II in Oystersteel with an Oyster bracelet features a white dial with an arrow-shaped 24-hour hand and hour markers with a Chromalight display.

The Explorer II is equipped with an additional 24-hour display; a dedicated hand circles the dial in 24 hours rather than the usual 12, pointing to a fixed bezel with 24 hour graduations.

This function enables the wearer to distinguish the hours of the day from the hours of the night, an essential feature for those who venture into environments where darkness reigns supreme – such as in the depths of caves, or where the sun never sets – like the polar regions in summer.

The Explorer II features a date display, an additional orange 24-hour hand and a fixed bezel with 24-hour graduations, enabling day to be distinguished from night.

It became the watch of choice for speleologists, volcanologists and polar explorers. Its hour markers and hands feature a highly-legible Chromalight display with long-lasting blue luminescence.

Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, alloys most commonly used in high-technology and in the aerospace and chemical industries, where maximum resistance to corrosion is essential.

Oystersteel is extremely resistant, offers an exceptional finish once polished and maintains its beauty even in the harshest environments.

The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology, designed to be both robust and comfortable. It is equipped with an Oysterlock folding clasp, which prevents accidental opening and the Easylink comfort extension link, also exclusive to Rolex.

This ingenious system allows the wearer to increase the bracelet length by approximately 5 mm, providing additional comfort in any circumstance.

Case

Type

  • Oyster, 42 mm, Oystersteel

Diameter

  • 42 mm

Material

  • Oystersteel

Bezel

  • Fixed, 24-hour graduated

Oyster Architecture

  • Monobloc middle case, screw-down case back and winding crown

Winding Crown

  • Screw-down, Triplock triple waterproofness system

Crystal

  • Scratch-resistant sapphire, Cyclops lens over the date

Waterproofness

  • Waterproof to 100 metres / 330 feet

Movement

Type

  • Perpetual, mechanical, self-winding, GMT function

Calibre

  • 3285, Manufacture Rolex

Precision

  • -2/+2 sec/day, after casing

Oscillator

  • Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorber

Winding

  • Bidirectional self-winding via Perpetual rotor

Power reserve

  • Approximately 70 hours

Bracelet

Type

  • Oyster, three-piece solid links

Bracelet Material

  • Oystersteel

Clasp

  • Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link

Dial

Type

  • White

Details

  • Highly legible Chromalight display with long-lasting blue luminescence

Case reference 226570

Bracelet reference 78KBOO