Rolex GMT-Master II 40 mm 126710BLROJ Steel Black Rolex GMT-Master II 40 mm 126710BLROJ Steel…

The Rolex GMT-Master II 126710BLROJ is the definitive modern expression of one of watchmaking's most storied pilot and traveler's watches. Introduced as part of Rolex's current-generation GMT-Master II collection, the reference 126710BLROJ carries forward nearly seven decades of GMT heritage—born from a 1950s partnership with Pan American World Airways—while delivering thoroughly contemporary engineering and materials. Its 40mm Oystersteel case strikes the ideal balance between presence and wearability, sitting comfortably on a wide range of wrist sizes without the bulk associated with larger sports watches.

The dial side of the 126710BLROJ is immediately arresting. The clean black lacquer dial is populated with luminous Chromalight-filled hour markers and hands that deliver exceptional legibility in low light. A distinctly red 24-hour hand—sometimes called the "GMT hand"—sweeps around the dial once every 24 hours, allowing the wearer to simultaneously track a second time zone against the graduated bezel. The date window at 3 o'clock, magnified by the signature Cyclops lens, rounds out a dial that is purposeful yet elegant.

The bezel is the defining design element of this reference. Its bidirectional 24-hour bezel has a red-and-blue Cerachrom ceramic insert, paired with the black dial and additional 24-hour hand.

The five-link Jubilee bracelet pairs with the red-and-blue Cerachrom bezel. The Jubilee is secured by Rolex's Oysterlock safety clasp with Easylink 5mm comfort extension, allowing for quick length adjustment.

Powering this watch is a self-winding Rolex movement with an independently adjustable local hour hand. Local time can be changed in one-hour steps without stopping the minute and seconds hands, while the additional 24-hour hand indicates reference time. The Oystersteel case and screw-down Triplock crown provide 100 meters (330 feet) of water resistance, and the scratch-resistant sapphire crystal with anti-reflective coating helps protect the dial.