The Rolex GMT-Master II, reference 126710GRNR, is a technical marvel housed in a 40 mm Oystersteel case, known for its durability and corrosion resistance. The case features the signature Oyster architecture with a monobloc middle case, screw-down case back, and winding crown, ensuring waterproofness up to 100 meters (330 feet). Its bidirectional rotatable 24-hour bezel is adorned with a two-colour grey and black Cerachrom ceramic insert, complete with moulded numerals and graduations, enhancing both its functionality and aesthetic appeal. The scratch-resistant sapphire crystal protects the dial, while the screw-down Triplock crown guarantees a watertight seal.
At the heart of the GMT-Master II is the Rolex Manufacture Calibre 3285, a perpetual, self-winding mechanical movement with a GMT function. This movement ensures exceptional accuracy, with a precision of -2/+2 seconds per day after casing. It features a paramagnetic blue Parachrom hairspring and high-performance Paraflex shock absorbers for robustness. With a power reserve of approximately 70 hours, the watch offers multiple functions, including a 24-hour display, second time zone, instantaneous date, and stop-seconds for precise time setting. The watch is paired with an Oyster bracelet made of Oystersteel, featuring three-piece solid links and a folding Oysterlock safety clasp with an Easylink 5 mm comfort extension. The black dial is highly legible, enhanced by the Chromalight display with long-lasting blue luminescence, and the entire watch is certified as a Superlative Chronometer (COSC + Rolex certification after casing).
