The Rolex Oyster Perpetual GMT-Master II reference 116710LN represents a defining technical evolution in the storied dual-time collection. Engineered for international travellers and navigators, it pairs robust tool-watch utility with refined modern architecture.

Its 40 mm monobloc Oyster case is milled from corrosion-resistant 904L stainless steel and measures approximately 12 mm thick. A bidirectional rotatable 24-hour bezel features an all-black Cerachrom ceramic insert with recessed numerals coated in platinum via physical vapour deposition. Equipped with a screw-down caseback and a Triplock triple waterproofness system, the case guarantees water resistance to 100 metres.

Beneath the scratch-resistant sapphire crystal sits a glossy black dial punctuated by applied 18 ct white gold hour markers. An instantaneous date display resides at 3 o'clock under the Cyclops magnification lens. A vibrant green 24-hour hand coordinates with matching green model script, tracking a second time zone against the ceramic bezel.

Powering the reference is the manufacture Calibre 3186 mechanical movement, beating at 28,800 vibrations per hour across 31 jewels. It features a paramagnetic blue Parachrom hairspring with a Breguet overcoil for enhanced stability against temperature variations and shocks. An independent rapid-setting local hour hand allows effortless adjustments while crossing time zones, backed by approximately 48 hours of power reserve.

The watch is mounted on a solid-link 904L Oystersteel bracelet featuring polished centre links. Secured by an Oysterlock safety clasp, the bracelet integrates an Easylink 5 mm comfort extension link to adjust effortlessly to the wrist throughout daily wear.