Housed in a 40mm Oystersteel Oyster case with a monobloc middle, screw-down case back, and screw-down Triplock winding crown, this GMT-Master II is built around a bidirectional rotatable 24-hour graduated bezel fitted with a two-colour grey and black Cerachrom insert in ceramic with moulded numerals and graduations. A scratch-resistant sapphire crystal protects the black dial, which carries a Chromalight display offering long-lasting blue luminescence. Water resistance reaches 100 metres / 330 feet.
Powering the watch is Rolex Calibre 3285, a Manufacture Rolex movement wound bidirectionally via a Perpetual rotor and rated to a precision of -2/+2 seconds per day after casing. It delivers approximately 70 hours of power reserve, a paramagnetic blue Parachrom hairspring, high-performance Paraflex shock absorbers, and a full suite of functions including a second time zone with independent rapid-setting of the hour hand, instantaneous date, and stop-seconds. The movement carries Superlative Chronometer certification, reflecting both COSC and Rolex certification after casing.
The Oystersteel Oyster bracelet is constructed from three-piece solid links and secured by a folding Oysterlock safety clasp with an Easylink 5mm comfort extension link. This example is unworn and presented as a complete set with its Rolex box and Rolex card, reference 126710GRNR-0004.
