Rolex GMT-Master II reference 126710 BLNR, 40 mm Oystersteel case, bidirectional 24-hour rotating bezel with black and blue Cerachrom ceramic insert, black lacquered dial, blue GMT hand, dual time zone display, date at 3 o’clock under Cyclops lens, sapphire crystal, Triplock screw-down crown, Oyster steel bracelet with Oysterlock clasp and Easylink comfort extension, Rolex calibre 3285 automatic movement certified as a Superlative Chronometer operating at 28,800 vibrations per hour, approximately 70-hour power reserve after full winding, 31 jewels, 100-metre water resistance, Full Set watch from December 2025 in near mint condition, fully inspected, authenticated and covered by a 3-year warranty by Mostra.
“Some watches do not become icons because they try to be, they become icons because a detail of colour, a precise function and a perfect silhouette eventually enter the collective imagination.”
The Rolex GMT-Master II 126710 BLNR belongs to that very rare family of modern watches already established within legend. It officially carries a reference, 126710 BLNR, but enthusiasts have given it a nickname that has almost become stronger than its name: Batman. This black and blue bezel, at once nocturnal, urban, technical and immediately recognisable, has transformed the contemporary GMT-Master II into a watch of desire, a travel watch, a collector’s watch and a status watch. In this Full Set version from December 2025, presented in near mint condition, it offers the most current and accomplished reading of this Rolex icon.
On the wrist, the GMT-Master II BLNR has a presence of great accuracy. The 40 mm Oystersteel case preserves that ideal proportion which defines modern Rolex professional watches: present enough to assert the watch, balanced enough to remain comfortable every day. The solid case, clean lugs, glossy ceramic bezel and Oyster bracelet give the whole a feeling of precision, solidity and evidence. It is a watch that can be worn with a shirt, a jacket, a blouson, a sweater or a more casual outfit, without ever feeling as though it forces the style.
The black and blue Cerachrom bezel forms the visual heart of this reference. Black evokes night, blue evokes day, distance, sky, horizon, that abstract line separating time zones and recalling the original vocation of the GMT-Master. This colour combination gives the watch an immediately identifiable personality, more modern than a Pepsi bezel, more subtle than a single-colour bezel, and more urban too. The Batman nickname is not a simple collector shortcut; it translates the graphic strength of the watch, that tension between dark elegance, blue brilliance and an almost cinematic presence.
The GMT function gives full meaning to this aesthetic. The additional blue hand allows a second time zone to be read, while the bidirectional 24-hour bezel offers an additional reading for travel, for following a reference time or for remaining connected to another city. The GMT-Master II is not only a sports watch. It is a watch of movement, travel, international appointments, early departures, airports, hotels, time zones and lives that do not always unfold in a single country. It has that rare ability to make the complication useful without ever making the dial complicated.
The history of the GMT-Master begins in the mid-1950s, when Rolex developed a watch capable of helping airline pilots read several time zones. The GMT-Master quickly became one of the great professional watches of the brand, associated with air travel, crews, long-haul flights and a new way of crossing the world. The GMT-Master II later extended this story with a more advanced mechanical architecture, allowing a more flexible reading of local time and reference time. The 126710 BLNR reference belongs to this continuity, but with all the codes of contemporary Rolex: ceramic, new-generation calibre, extended power reserve, secure bracelet and reinforced precision.
Within the current Rolex range, the 126710 BLNR occupies a very particular place. It carries the professional heritage of the GMT-Master, yet it also speaks to a wider audience, collectors looking for a modern watch, immediately recognisable, sufficiently rare in its visual identity, and perfectly usable every day. The version on Oyster bracelet, sportier and more direct, gives the Batman a sharper presence than the Jubilee version. It reinforces the tool-watch spirit, the professional dimension and the more structured presence on the wrist.
The black lacquered dial concentrates Rolex legibility at its most effective. The Chromalight markers, Mercedes hands, large blue GMT hand and date under Cyclops lens create a perfectly balanced whole. Nothing is unnecessary. The contrast is immediate, the reading remains clear, and the ensemble preserves that tension between luxury and function that defines great Rolex professional watches. The blue of the GMT hand echoes the bezel, like a discreet signature crossing the dial and recalling the function of the watch without ever weighing down its reading.
The Rolex calibre 3285 automatic movement supports this watch with strong technical coherence. It operates at 28,800 vibrations per hour, offers an approximately 70-hour power reserve after full winding and rests on a 31-jewel architecture. Certified as a Superlative Chronometer, it benefits from Rolex’s latest-generation advances, including the Chronergy escapement, an architecture designed for precision, reliability and energy efficiency, as well as a GMT function designed for real use. This calibre gives the 126710 BLNR a very comfortable autonomy: put down on Friday evening, it can be picked up again on Monday without having stopped.
The construction of the watch reinforces this feeling of mastery. The Oystersteel case offers excellent resistance to use, the Triplock screw-down crown protects water resistance, the sapphire crystal ensures great durability, and the Cerachrom bezel retains its brilliance with remarkable resistance to scratches and colour alteration. The Oyster bracelet with Oysterlock clasp gives the watch a solid, almost architectural presence, while the Easylink system allows the bracelet to be slightly adjusted for improved comfort during the day. It is a discreet detail, but an essential one in the daily use of a modern watch.
Wearing a Rolex GMT-Master II Batman today means wearing a watch that manages to be both immediately identifiable and perfectly versatile. It has the strength of an icon, yet remains easy to live with. It attracts the eye without excess, gives strong presence without becoming massive, evokes travel without imposing a vintage aviator aesthetic. It is modern, precise, sharp, almost urban, yet it still carries at its core the spirit of the GMT-Master: a watch made for those who move from one place to another, from one time to another, from one world to another.
From a collector’s perspective, this Rolex GMT-Master II 126710 BLNR Full Set from December 2025 presents several major arguments. It belongs to the current generation, it has the calibre 3285, it comes in a highly sought-after configuration with black and blue bezel, it is accompanied by its complete original set, and its near mint condition considerably strengthens its appeal. The December 2025 date gives it exceptional freshness on the recent pre-owned market, while allowing the buyer to benefit from a watch already available, inspected and immediately wearable.
The Batman nickname also contributes to its interest. In the Rolex universe, certain nicknames become true cultural markers. Pepsi, Coke, Root Beer, Batman: these names do not replace references, but they create an imagination. The BLNR established itself because its colour combination immediately found its place. It evokes night, city, speed, travel, a form of contemporary elegance darker and sharper than the historical GMTs. It is a modern collector’s watch, but also a watch that can be worn without reservation.
This example is offered as a Rolex GMT-Master II 126710 BLNR Full Set from December 2025, in near mint condition, with its box, papers and original accessories. The watch has been carefully inspected in our workshop in order to offer a transparent reading of its condition, operation and coherence. A major piece for someone seeking a contemporary GMT-Master II, very recent, complete, immediately identifiable and perfectly suited both to daily use and to a modern Rolex collection.
Choosing a Rolex GMT-Master II from Mostra requires a precise perspective. Each watch is selected with more than 40 years of watchmaking expertise, with attention given to authenticity, actual condition, movement, bracelet, set and overall coherence. This GMT-Master II 126710 BLNR has been fully inspected, authenticated and prepared so that it can be worn with confidence. You benefit from personalised guidance as well as a 3-year Mostra warranty, a strong commitment that reflects our confidence in the watches we offer. Mostra is built on a lasting relationship with its clients, supported by 5-star Google reviews and regular recognition within the professional watchmaking press. A watch such as this is not chosen only because it is a Rolex Batman, it is chosen for its freshness, near mint condition, Full Set, balance on the wrist and the quality of the perspective applied to it before acquisition.
