Rolex GMT-Master II Yellow Gold — Black Dial Two-Tone | Ref. 126713GRNR

Among Rolex's most coveted professional references, the GMT-Master II 126713GRNR represents the pinnacle of the marque's dual-material artistry. The 40 mm Oyster case marries 904L Oystersteel with 18 ct yellow gold in the two-tone configuration Rolex calls Rolesor, a pairing first introduced on the GMT-Master lineage to serve both the aesthetics of luxury and the rigors of travel. The black Cerachrom bezel insert — virtually impervious to UV fading and corrosion — provides a crisp 24-hour scale for tracking a second time zone at a glance.

At the heart of the reference beats Calibre 3285, Rolex's in-house manufacture movement representing the current GMT-Master II standard. Certified as a Superlative Chronometer by Rolex's own laboratory to a precision of ±2 seconds per day — five times the COSC threshold — the 3285 incorporates the patented Chronergy escapement, a paramagnetic blue Parachrom hairspring, and a 70-hour power reserve delivered via an efficient bidirectional winding rotor. The instantaneous-jump GMT hand, capable of independent 1-hour adjustment without disturbing the running seconds, makes re-setting across time zones swift and accurate.

The sunray-brushed black dial is anchored by luminescent Chromalight hour markers and matching Mercedes hands, ensuring legibility in pressurised aircraft cabins or dimly lit executive suites with equal authority. The Jubilee bracelet — here rendered in alternating steel and yellow gold links — adds a dressy suppleness, fastened by an Oysterclasp with the Easylink rapid-extension comfort system. Water-resistant to 100 metres, the 126713GRNR occupies that rare horological category where technical ambition and aesthetic opulence are held in perfect equilibrium.