Rolex GMT Master II

Overview

The Rolex GMT-Master II 126710BLNR is a modern travel watch with unmistakable Rolex design, practical dual-time functionality and a highly distinctive black and blue Cerachrom bezel. Often referred to by collectors as the “Batman” or “Batgirl”, this reference brings together a robust Oystersteel case, a refined black dial and the convenience of a fourth hand for reading a second time zone. Its 40mm proportions make it equally convincing as a daily watch, business companion or purpose-built travel instrument.

Originally created for pilots and frequent travellers, the GMT-Master remains one of the most recognisable professional watch designs ever made. The 126710BLNR continues that tradition while adding the contemporary materials, movement technology and bracelet comfort expected of a current-generation Rolex. For buyers seeking a versatile example from the world of Rolex watches, this reference offers a compelling combination of capability, status and long-term appeal.

Priced at £13,950, this Rolex GMT-Master II presents a strong opportunity to own one of the manufacturer’s most sought-after steel sports watches. Its appeal is not limited to the bezel colour: the watch is an accomplished piece of engineering, designed to be legible, durable and comfortable while retaining the visual presence for which the GMT-Master II is known.

Brand and reference history

Rolex introduced the original GMT-Master in the 1950s for professional aviators and Pan American World Airways crew. Its defining feature was a rotating 24-hour bezel used in conjunction with an additional 24-hour hand, allowing the wearer to distinguish local time from Greenwich Mean Time. As international travel evolved, the GMT-Master became equally popular with business travellers, explorers and collectors who appreciated its usefulness beyond the cockpit.

The GMT-Master II followed with an independently adjustable 24-hour hand, making it possible to set a third time zone while retaining local time and home time. Reference 126710BLNR belongs to the current generation of the collection and is particularly notable for its black and blue Cerachrom bezel. The colour combination modernises the classic two-tone travel-watch concept while preserving the instantly familiar GMT-Master silhouette.

The BLNR designation is widely used within the collecting community to identify the black and blue bezel configuration. The watch is also commonly nicknamed “Batman” when fitted to an Oyster bracelet and “Batgirl” when presented on a Jubilee bracelet. These informal names are not official Rolex model titles, but they reflect the strong identity this colourway has developed among enthusiasts.

Dial, hands and design detail

The black dial provides a crisp, high-contrast backdrop for the applied hour markers and Mercedes-style hour hand. White gold surrounds help the markers retain their definition, while luminous material supports clear reading in low-light conditions. The date aperture at three o’clock is magnified by Rolex’s Cyclops lens, a practical detail that has become one of the brand’s most recognisable design signatures.

At the centre of the dial, the additional 24-hour hand points towards the graduated bezel, allowing a second time zone to be read independently of local time. The GMT hand’s contrasting colour makes it easy to identify at a glance without compromising the clean appearance of the dial. Large hour and minute hands support rapid time reading, while the seconds hand provides a continuous visual indication that the movement is operating.

The bezel is formed from Rolex Cerachrom, a proprietary ceramic material engineered for resistance to ultraviolet light, corrosion and everyday scratching. Its two-colour division separates daytime and nighttime hours, making the 24-hour scale intuitive during travel. The polished numerals remain legible against the ceramic surface, and the overall finish gives the watch a distinctive technical character without making it feel overly ostentatious.

Case, bracelet and wearability

The 40mm Oyster case is manufactured from Rolex Oystersteel, a corrosion-resistant alloy selected for its strength and ability to retain its finish. Its combination of brushed and polished surfaces gives the watch visual depth: the case flanks remain purposeful and robust, while the polished edges add refinement. The screw-down crown, protected by crown guards, contributes to the watch’s Oyster case architecture and water-resistant construction.

The watch is paired with a Rolex bracelet designed to balance security with comfort. Depending on its configuration, the 126710BLNR is especially associated with either the practical three-link Oyster bracelet or the five-link Jubilee bracelet, with the latter giving the model a more intricate and dress-conscious appearance. The bracelet’s solid construction and secure clasp support confident daily wear, while Rolex finishing ensures that it feels appreciably more refined than a purely utilitarian sports watch.

Its proportions make the GMT-Master II adaptable across a wide range of clothing and occasions. The case is substantial enough to carry the presence expected of a professional Rolex, yet not so large that it becomes difficult to wear beneath a cuff. The combination of monochrome steel, black dial and blue-and-black bezel also makes it easier to style than more brightly coloured sports-watch alternatives.

Movement and technical specification

The 126710BLNR is powered by Rolex calibre 3285, an automatic mechanical movement developed for the GMT-Master II. It provides the independently adjustable GMT function required for modern travel, while also supporting hours, minutes, seconds and a quick-set date display. As a contemporary Rolex calibre, it incorporates the brand’s Chronergy escapement and a Parachrom hairspring, technologies intended to improve efficiency, resistance to magnetic fields and stability in everyday use.

Calibre 3285 is built as a self-winding movement, using the motion of the wearer’s wrist to maintain its power reserve. Its architecture is protected by the Oyster case, and the movement is regulated to Rolex’s demanding Superlative Chronometer standards once installed in the completed watch. This designation combines precision requirements with broader performance expectations for water resistance, power reserve and resistance to shocks and magnetic influences.

• Brand: Rolex
• Model: GMT-Master II
• Reference: 126710BLNR
• Category: GMT and travel watches
• Case diameter: 40mm
• Case material: Rolex Oystersteel
• Bezel: Bidirectional black and blue Cerachrom 24-hour bezel
• Dial: Black with luminous hour markers
• Functions: Hours, minutes, seconds, date and second time zone
• Movement: Rolex calibre 3285 automatic mechanical movement
• Bracelet: Rolex Oystersteel bracelet configuration

The watch’s technical appeal lies in the way these elements work together. It is not simply a standard time-and-date watch with an additional hand; the bezel, dial and movement have been designed as an integrated system for reading multiple time zones quickly. That practicality remains central to the GMT-Master II’s identity, even as modern navigation technology has made mechanical travel watches primarily objects of craftsmanship and personal preference.

Sizing and how it wears

At 40mm, the GMT-Master II occupies a versatile position on the wrist. It has enough diameter and visual weight to feel contemporary, but its proportions remain close to the classic sports-watch format that made the collection famous. The lugs are shaped to transition neatly into the bracelet, helping the case sit securely rather than appearing oversized or top-heavy.

Wrist comfort will depend on circumference, bracelet adjustment and personal preference, but the Oystersteel construction gives the watch a reassuringly solid feel without turning it into an unwieldy piece. The articulated bracelet allows it to follow the wrist naturally, and the clasp helps distribute the weight evenly. Buyers who prefer a more intricate, jewellery-like bracelet presence may find the Jubilee configuration especially appealing, while the Oyster option offers a more restrained professional appearance.

The watch works particularly well as a single everyday luxury watch. The black dial and steel case are sufficiently discreet for office wear, while the blue bezel adds character at weekends and on holiday. It can sit alongside formal tailoring, casual knitwear or travel clothing without losing its identity. In comparison with a classic dress model such as the Rolex Datejust, the GMT-Master II has a more overtly professional and sporty stance, but it remains polished enough for a wide range of settings.

Collectability and market value

The Rolex GMT-Master II 126710BLNR has become one of the most recognisable modern references in the brand’s professional collection. Its appeal is supported by several factors: the enduring popularity of the GMT-Master design, the practical second-time-zone function, the technical achievement of the two-colour ceramic bezel and the broad demand for Rolex steel sports watches. The black and blue colourway is distinctive without being difficult to wear, which helps explain its popularity among both established collectors and first-time buyers.

Market value is influenced by condition, configuration, completeness, service history and the overall quality of the individual example. Bracelet condition is particularly important on a sports Rolex, as stretching, surface marks and clasp wear can affect both appearance and desirability. A well-preserved watch with strong case geometry, clean bezel detailing and an attractive bracelet will generally command greater interest than an example that has been heavily polished or poorly maintained.

At £13,950, this watch sits within a highly competitive segment of the pre-owned luxury market. The price should be considered alongside the model’s technical specification, brand recognition, condition and buying experience rather than judged solely by the reference number. For those comparing specialist categories, our selection of gmt & travel watches provides useful context on how the GMT-Master II compares with other watches designed for international travel.

Authenticity, condition and servicing

Authenticity is fundamental when buying a pre-owned Rolex. A proper assessment should consider the entire watch rather than relying on one isolated detail. The reference, case, bracelet, clasp, bezel, dial, hands and movement should all be examined for consistency, correct manufacture and appropriate finishing. On a GMT-Master II, particular attention should also be paid to the Cerachrom bezel, the alignment of its 24-hour scale and the relationship between the dial, GMT hand and movement.

Condition should be judged with equal care. Light signs of wear can be expected on a pre-owned watch and may reflect normal ownership, while excessive polishing, deep marks, damaged bracelet components or poorly executed refinishing can materially affect the watch. The sharpness of the case edges, the integrity of the bezel and the condition of the clasp are all important indicators. Where information has not been supplied, buyers should request specific details rather than assume a service date, box, papers or warranty is included.

Like all mechanical watches, the GMT-Master II benefits from appropriate periodic servicing. Service requirements depend on use, environment, performance and the recommendations of a qualified watchmaker. Water resistance should be checked after work involving the case or crown, and the watch should be assessed if it has suffered a significant impact or begins to gain or lose time noticeably. Careful servicing preserves reliability while respecting the original case and movement components.

Buying this watch from us

This Rolex GMT-Master II 126710BLNR is offered at £13,950. It is an opportunity to acquire a highly capable and widely admired Rolex reference through a specialist pre-owned watch dealer. The model’s balance of travel functionality, robust construction and distinctive design makes it an especially strong choice for a buyer who wants one watch to cover business, leisure and international travel.

When considering a pre-owned luxury watch, confidence comes from clarity. We encourage buyers to review the supplied photographs and product information carefully and to ask for any additional details needed before purchase. Questions about condition, bracelet configuration, accessories, servicing or delivery should be addressed directly so that expectations are clear from the outset.

The GMT-Master II is a watch with genuine practical purpose as well as considerable collector appeal. Its 40mm Oystersteel case is durable, the Cerachrom bezel is designed for long-term visual stability and calibre 3285 gives the watch the independent GMT functionality that defines the collection. For a buyer seeking a modern Rolex with strong identity and everyday versatility, the 126710BLNR remains an exceptionally compelling proposition.

Choose the Rolex GMT-Master II 126710BLNR for its instantly recognisable design, its useful second-time-zone display and its enduring place within Rolex’s professional watchmaking history. At £13,950, it offers a refined route into one of the most desirable contemporary GMT watches available to pre-owned buyers.

Frequently asked questions

What is the Rolex GMT-Master II 126710BLNR?

The Rolex GMT-Master II 126710BLNR is a 40mm professional travel watch with a black dial, black and blue Cerachrom 24-hour bezel, date display and an independently adjustable GMT hand for reading a second time zone.

Why is the 126710BLNR called the Batman or Batgirl?

Collectors use “Batman” and “Batgirl” as informal names for the black and blue bezel configuration. “Batman” is commonly associated with the Oyster bracelet, while “Batgirl” is often used for the Jubilee bracelet version.

What movement powers this Rolex GMT-Master II?

The watch is powered by Rolex calibre 3285, an automatic mechanical movement developed for the GMT-Master II. It provides the independent GMT function, date display and the performance associated with Rolex’s Superlative Chronometer standards.

Is the bezel ceramic?

Yes. The bidirectional 24-hour bezel is made from Rolex Cerachrom, a ceramic material designed to resist corrosion, ultraviolet fading and everyday scratching more effectively than traditional bezel materials.

Is 40mm a suitable size for everyday wear?

For many wrists, yes. The 40mm case offers a versatile balance between presence and comfort, while the articulated Rolex bracelet helps the watch sit securely. Personal wrist size and bracelet adjustment will determine the precise fit.

How much does this watch cost?

This Rolex GMT-Master II 126710BLNR is offered at £13,950. Condition, bracelet configuration, included accessories and service history can all affect the desirability and value of a pre-owned example.