Rolex GMT Master II

Overview

The Rolex GMT-Master II 126710BLNR is an instantly recognisable travel watch, combining Rolex’s robust engineering with a distinctive blue-and-black Cerachrom bezel. Known among enthusiasts as the “Batman”, this reference offers a practical second-time-zone display while retaining the versatility and understated confidence expected of a modern Rolex sports watch.

Designed for people who move between time zones, the GMT-Master II presents local time, home time and a third time zone through its independently adjustable 24-hour bezel. Its 40mm Oystersteel case, five-row Jubilee bracelet and black dial create a balance between technical purpose and everyday refinement. For buyers exploring Rolex watches, the 126710BLNR remains one of the marque’s most desirable contemporary references.

Offered at £13,250.00, this watch sits within one of Rolex’s most sought-after professional families. The appeal is not limited to its blue-and-black colour scheme: the reference brings together a useful complication, an exceptionally resilient case and bracelet, and the mechanical credibility of Rolex’s modern GMT-Master II platform.

Brand and reference history

Rolex introduced the original GMT-Master in the 1950s for Pan American Airways pilots, who needed a reliable way to read Greenwich Mean Time alongside local time during long-haul flights. The design became associated with aviation, international travel and practical professional equipment. Over time, the GMT-Master evolved from a specialist instrument into one of the most recognisable luxury sports watches ever produced.

The GMT-Master II name reflects the later development that allowed the local hour hand to be adjusted independently of the 24-hour hand. That distinction makes the modern watch more useful for travellers, since the wearer can change local time without losing track of home time. Reference 126710BLNR represents the contemporary interpretation, pairing Rolex’s current-generation construction with the blue-and-black bezel that has become a defining visual signature.

The “BLNR” designation relates to the bezel colours: blue and noir, or black. The blue half conventionally represents daylight hours, while the black half denotes night-time hours. Rather than relying on a painted aluminium insert, Rolex uses a single-piece Cerachrom bezel, giving the watch its strong colour contrast and long-term resistance to ultraviolet light, corrosion and everyday scratching.

Dial, hands and design detail

The black dial provides a clear, highly legible background for the applied hour markers and broad Mercedes-style hour hand. White gold surrounds help the markers retain their brightness, while luminous material allows the time to be read in low-light conditions. The red GMT hand extends towards the graduated bezel, making the second-time-zone indication immediately distinguishable from the local-time display.

At three o’clock, the date window is paired with Rolex’s Cyclops lens, which magnifies the calendar display for quick reading. The dial layout remains restrained despite the additional travel function. White text, polished surrounds and the red GMT pointer introduce contrast without compromising the clean, purposeful character associated with Rolex professional models.

The bidirectional 24-hour bezel is marked with clear numerals and graduations. By rotating it against the GMT hand, the wearer can track a third time zone in addition to local and reference time. This is a genuinely functional design feature rather than a decorative complication, and it remains one of the reasons the GMT-Master II is so popular with frequent travellers and collectors alike.

Case, bracelet and wearability

The 40mm Oyster case is crafted from Rolex Oystersteel, a corrosion-resistant steel selected for its durability and ability to maintain a refined finish. Its proportions are familiar and versatile, with a robust profile that feels purposeful without becoming excessive on the wrist. The screw-down crown, protected by crown guards, contributes to the watch’s strong water resistance and everyday practicality.

The blue-and-black Cerachrom insert is one of the case’s most distinctive elements. Rolex’s ceramic material is engineered to resist fading and retain its colour, while the engraved 24-hour scale is designed to remain legible over time. The polished and brushed surfaces of the case create controlled reflections, giving the watch a more formal presence when worn with tailoring while preserving its sports-watch character.

This reference is fitted to a five-link Jubilee bracelet, which gives the GMT-Master II a subtly more elegant appearance than an equivalent Oyster-bracelet configuration. Its combination of polished centre links and brushed outer links adds visual depth, while the Oysterlock clasp helps secure the watch during daily wear. The bracelet also gives the watch a smooth, flexible feel that suits a wide range of clothing and occasions.

Movement and technical specification

Inside the 126710BLNR is Rolex’s calibre 3285, an automatic mechanical movement developed for the modern GMT-Master II. It provides the independently adjustable local-hour function required of a true GMT-Master II, while the traditional 24-hour hand continues to indicate reference time. This arrangement makes the watch intuitive to use when crossing borders or managing business and family commitments in another time zone.

The movement uses Rolex’s Chronergy escapement, combining efficiency with resistance to magnetic interference. Its blue Parachrom hairspring is designed to offer improved stability against shocks and temperature variation, supporting the dependable timekeeping expected from a Rolex professional watch. The calibre also features automatic winding and a power reserve of approximately 70 hours, giving useful flexibility when the watch is removed for a weekend.

As a modern Rolex movement, calibre 3285 is protected by a screw-down caseback and a sealed Oyster case architecture. The watch’s water resistance is rated to 100 metres, making it suitable for swimming and everyday exposure to water when the crown and case are correctly secured. The specification combines travel functionality with the durability expected from a watch designed for regular use rather than occasional display.

Technical highlights include the 40mm Oystersteel case, automatic GMT movement, independent local-hour adjustment, 24-hour Cerachrom bezel, date display with Cyclops lens, luminous hour markers and hands, screw-down crown, Oysterlock clasp and approximately 70-hour power reserve. Together, these features explain why the model is often regarded as one of the most complete modern travel watches available.

Sizing and how it wears

At 40mm, the GMT-Master II offers a balanced presence that works across a broad range of wrist sizes. The case has enough substance to feel like a professional tool watch, but its diameter avoids the oversized proportions found on some contemporary sports watches. The short, controlled lugs help the case sit securely, while the articulated Jubilee bracelet follows the wrist naturally.

The watch can be worn comfortably with casual clothing, business attire or formal travel wardrobes. Its black dial and steel case provide a neutral foundation, while the blue-and-black bezel supplies the colour and personality. This makes the 126710BLNR more versatile than its nickname might suggest: the “Batman” description is memorable, but the overall design remains polished and adaptable.

For comparison, buyers looking for a smaller and more traditionally dress-oriented Rolex may also consider the proportions of a Rolex Datejust 31. The GMT-Master II, however, has a more technical profile and a stronger visual presence, particularly because of its graduated bezel and additional red GMT hand.

Collectability and market value

The 126710BLNR is highly regarded because it combines three characteristics that collectors consistently value: a recognisable Rolex professional design, a useful complication and a distinctive colourway. The blue-and-black bezel is visually different from more traditional all-black configurations while remaining restrained enough for everyday wear. Its association with modern Rolex travel watches has helped establish the reference as a particularly desirable model.

Demand is also supported by the model’s practical specification. The 40mm case is a proven size, the Jubilee bracelet offers a refined alternative to the more overtly tool-oriented Oyster bracelet, and calibre 3285 provides a long power reserve with contemporary GMT functionality. These attributes make the watch appealing both to established collectors and to buyers seeking a first serious travel complication.

At £13,250.00, this example represents a significant luxury-watch purchase and should be assessed through more than colour or current availability alone. Condition, originality, bracelet completeness, service history and the quality of authentication all influence the desirability of a pre-owned GMT-Master II. A well-presented example can offer the enjoyment of a modern Rolex sports watch while retaining strong recognition in the wider market.

Those considering the wider category can explore our gmt & travel watches collection, where the emphasis is on watches created to display more than one time zone or to support life on the move.

Authenticity, condition and servicing

Authenticating a Rolex GMT-Master II requires a detailed assessment of the complete watch, not simply an inspection of the dial or bezel. The reference, case, bracelet, clasp, movement and finishing should all correspond with the expected specification. Particular attention should be paid to the Cerachrom bezel, dial printing, luminous components, crown, engravings and the construction of the bracelet and clasp.

Condition is equally important. A pre-owned watch may show evidence of careful use, and light marks can form part of its ownership history, but the quality of previous polishing and the definition of the case edges should be considered. The blue-and-black bezel should be examined for damage, while the bracelet should be checked for stretch, secure clasp operation and correct alignment. No additional condition or service details are stated here beyond the information supplied, so prospective buyers should request the current specification before purchase.

Like any mechanical watch, the GMT-Master II benefits from appropriate maintenance. Service intervals depend on use, environment and observed performance, and a watchmaker should assess rate stability, winding efficiency, water resistance and the condition of seals. Keeping the crown secured, avoiding unnecessary shocks and having water resistance checked periodically are sensible ways to support reliable everyday ownership.

Buying this watch from us

This Rolex GMT-Master II 126710BLNR is available from us at £13,250.00. It offers the unmistakable design language of the GMT-Master II, the versatile proportions of a 40mm case and the practicality of an independent GMT display. The blue-and-black bezel adds character without limiting the watch’s ability to work with business, casual or travel clothing.

Before committing to a purchase, we recommend confirming the full supplied contents, current condition, bracelet sizing options and any available documentation with our team. These details can materially affect the ownership experience, particularly when buying a pre-owned Rolex. We will be pleased to discuss the watch, answer questions about its specification and help you decide whether this reference suits your collection.

Choose the 126710BLNR if you want a modern Rolex with genuine travel functionality rather than a purely decorative complication. It is robust enough for frequent wear, refined enough for formal settings and distinctive enough to remain instantly recognisable. The combination of a black dial, blue-and-black ceramic bezel, Jubilee bracelet and calibre 3285 makes it a compelling addition to a considered collection.

Frequently asked questions

What is the Rolex GMT-Master II 126710BLNR?

The 126710BLNR is a modern Rolex GMT-Master II with a 40mm Oystersteel case, black dial, blue-and-black Cerachrom bezel, Jubilee bracelet and automatic GMT movement. It is widely known by the enthusiast nickname “Batman”.

What does the GMT function do?

The GMT function allows the watch to display a second time zone using the dedicated 24-hour hand and bezel. The independently adjustable local-hour hand can be set when travelling without disturbing the reference-time indication.

Why is the bezel blue and black?

The blue and black sections divide the 24-hour scale into daylight and night-time periods. The combination also gives the watch its distinctive “Batman” nickname and is produced using Rolex’s durable Cerachrom ceramic material.

What size is the Rolex GMT-Master II 126710BLNR?

The case measures 40mm in diameter. This is a versatile size that provides a confident sports-watch presence while remaining suitable for a wide range of wrists and clothing styles.

Which movement powers this watch?

The watch is powered by Rolex calibre 3285, an automatic mechanical GMT movement with an independently adjustable local-hour hand and an approximately 70-hour power reserve.

How much does this watch cost?

The listed price for this Rolex GMT-Master II 126710BLNR is £13,250.00. Buyers should confirm the current condition, supplied accessories and documentation with us before completing a purchase.