Rolex GMT-Master II 40 mm 126710BLROJ1 Steel Black

The Rolex GMT-Master II ref. 126710BLROJ1 — widely known as the "Batman" on Jubilee — represents the pinnacle of the GMT-Master lineage, a tool-watch family Rolex developed in the 1950s in collaboration with Pan American Airways to give long-haul flight crews a reliable way to read two time zones simultaneously. Over seven decades the GMT-Master evolved from a rugged pilot's instrument into one of the most recognized and coveted sport-luxury watches in the world, and reference 126710BLROJ1 represents one of its most celebrated modern chapters.

Design details on this 40mm Oystersteel case are immediately striking. The bidirectional rotating 24-hour bezel is crafted from Rolex's proprietary Cerachrom ceramic in black and red — the color combination that earned the nickname "Batman" among collectors — a virtually scratch-proof material whose color is produced by a platinum-sputtering PVD process that remains vivid for decades. Beneath it sits a crisp black dial, a timeless configuration that maximizes legibility against the iconic Mercedes hands and applied luminous hour markers.

What elevates this specific reference above earlier GMT iterations is the bracelet choice: the five-link Jubilee, a design originally introduced on the Datejust in 1945 and long associated with dressier Rolex sports models. Its fluid drape and refined center-polished links provide a noticeably different wrist experience from the Oyster bracelet — more supple and elegant — making the 126710BLROJ1 equally at home in a boardroom or a business-class cabin. The Oysterlock clasp with Easylink comfort extension ensures a secure, adjustable fit across varying conditions.

Powering the watch is a Rolex automatic movement, delivering the brand's signature reliability and precision. The independently adjustable GMT hand allows the wearer to set a second time zone without disturbing the local time display — a genuine functional advantage for frequent travelers — while the bidirectional 24-hour bezel adds the ability to track a third time zone at a glance. Combined with 100 meters (330 feet) of water resistance, this is a watch engineered to perform in real-world conditions.

On the wrist, the 40mm case diameter and moderate lug-to-lug proportions make the GMT-Master II 126710BLROJ1 an exceptionally versatile size, flattering a wide range of wrist sizes and pairing naturally with everything from a suit to a weekend shirt. The polished and brushed Oystersteel surfaces catch light beautifully without veering into ostentation, a hallmark of Rolex's obsessive finishing standards.

At Bizak & Co., every pre-owned Rolex is certified authentic before it enters our inventory, and this 126710BLROJ1 is no exception. The Batman on Jubilee commands strong collector demand and holds its value exceptionally well on the secondary market, making it as sound a purchase as it is a pleasure to wear. Visit bizakandco.com or contact our team directly to ask about this reference — pieces of this caliber move quickly, and we are here to guide you through every step of acquiring it.