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The Twinlock system guarantees that the screw-down winding crown is perfectly water-resistant thanks to two sealed zones, one inside the tube, the other inside the crown. This principle is used on all the watches in the Oyster collection that are guaranteed waterproof to 100 metres (330 feet).

To protect the winding crown – the only external mobile element of the watch – the case of the Explorer II is machined with an integral crown guard.

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A scratch-proof sapphire crystal, a clear dial and special luminescent markings allow the rugged Rolex Explorer II to be read even in the most challenging conditions.

Night and Day


The high-contrast Chromalight display on the dial innovates by pushing the boundaries of visibility in dark environments. The blue glow of the hour markers and hands lasts up to eight hours with a uniform luminosity throughout, practically twice as long as that of standard luminescent materials.

904L steel
904 • l • steel
  1. A stainless steel usually reserved for the chemical or aerospace industries.
  2. Its corrosion-resistance and extremely high lustre give it properties normally associated with precious metals.
  3. Pioneered for watchmaking by Rolex.
  4. Cast in a vacuum, for the highest possible purity.
  5. A steel so strong that special tools are required to machine it.
  6. The way to ensure enduring resistance and perfection.
  7. The Rolex Way.



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 situation.




To increase the resistance of its movements to shocks – especially if the watch is dropped – Rolex developed Paraflex, a highly efficient shock absorber designed to protect sensitive components of the movement, notably the staff of the balance wheel. Paraflex shock absorbers increase shock resistance by up to 50 per cent.



Rolex Explorer II watch e-Brochure


The Explorer II

Consult detailed product information about this model anytime, anywhere, by downloading the e-Brochure to your personal computer or tablet device.