Notes: 40mm Everose Rolesor case with Oystersteel monobloc middle case, screw-down Everose gold crown, Everose gold bidirectional rotatable 24-hour graduated bezel with brown and black Cerachrom insert and engraved numerals, scratch-resistant sapphire crystal with cyclops lens over the date, black dial, hour markers set with Chromalight, Rolex calibre 3285 self-winding movement with second time-zone hour hand and instantaneous date, approximately 70 hours of power reserve, Everose Rolesor Oyster bracelet with flat three-piece links, folding Oysterclasp buckle with Easylink 5mm comfort extension link. Waterproof to 100 meters

Mechanism: The new caliber 3285 movement replaces the caliber 3186. It has a larger overall diameter allowing for a larger barrel offering a 70 hour power reserve. The caliber 3285 also has the updated Chronergy escapement allowing for 15% more efficiency as per Rolex claims.

The new calibre 3285, a new-generation movement entirely developed and manufactured by Rolex. With 10 patent applications filed over the course of its development, this movement features a Chronergy escapement and a guaranteed power reserve of approximately 70 hours. Like all Rolex Perpetual movements, the 3285 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. The 3285 is equipped with a Parachrom hairspring, offering greater resistance to shocks and to temperature variations. Its architecture, in common with all Oyster watch movements, makes it singularly reliable.

Family Notes: Although the Rolex GMT-Master was designed essentially for professional use, its combination of peerless functionality and rugged good looks has attracted a wider travelling public. As well as appreciating its ability to display different time zones, these travellers admire the robustness and versatile appearance that make the GMT-Master eminently suitable for globetrotting and, indeed, for any occasion.