A few years after the new Explorer reference, Rolex introduces a 40 mm diameter model. The latter guarantees greater legibility and maintains the qualities that made the Explorer, one of Rolex's first tool watches, a reference that has spanned the ages. The new Explorer 40 is made of Oystersteel, an alloy exclusive to Rolex. 

The satin finishes on the middle case, on the bracelet and on the clasp and the reflections of light on the sides of the middle case transparencies are an invitation to look at this sober and harmonious iconic watch with new eyes.

An example of robustness and reliability, the Oyster case of the Explorer has a diameter of 40 mm for the first time. There middle case of this new model is machined from a solid block of Oystersteel. The Twinlock winding crown, equipped with a double waterproofing system, is firmly screwed to the case. The crystal is virtually scratch-resistant sapphire and benefits from an anti-reflection treatment.

Oystersteel offers a unique shine. Rolex watches made from this special steel retain their luster even when exposed to the most extreme conditions. Produced exclusively for Rolex, Oystersteel belongs to the family of 904L steels, alloys generally used in high technology, for example in the aerospace and chemical industries. Their excellent anti-corrosion properties are comparable to those of precious metals.

The Explorer 40 guarantees outstanding readability in all situations thanks to the Chromalight display, which emits a blue glow when the watch is in a dark environment and which, in daylight, produces a particularly vivid white colour. The luminescent material used, exclusive to Rolex, is known for its exceptional performance.