ROLEX GMT MASTER II BATMAN 126710BLNR OYSTER BRACELET

The GMT-Master II Batman 126710BLNR — the blue and black that defines a generation

The “Batman” nickname has followed the blue and black GMT-Master II bezel since Rolex first introduced the combination on the 116710BLNR in 2013. Blue for day, black for night — the two halves of the 24-hour bezel read as a clock around the world while the reference accumulated one of the most recognisable collector identities in the contemporary Rolex line-up. By the time Rolex refreshed the reference to the 126710BLNR in 2019 with Calibre 3285 and a redesigned case, the Batman name had become permanent shorthand for a specific configuration that buyers know before they know the reference number.

The 126710BLNR is the current-generation Batman: 40mm Oystersteel, blue and black Cerachrom bezel, black Chromalight dial, Calibre 3285 with a 70-hour power reserve.

The blue and black Cerachrom bezel

The GMT-Master II’s defining function is the 24-hour bidirectional rotating bezel, which allows simultaneous tracking of a second time zone at a glance. The blue and black Cerachrom ceramic insert divides the 24-hour scale into two halves: blue from 6 to 18 (day hours), black from 18 to 6 (night hours). The moulded numerals and graduations are part of the ceramic itself — not applied or painted — and the platinum-coated markers are vacuum-deposited after machining.

Cerachrom is Rolex’s proprietary ceramic compound. It is virtually scratchproof, immune to UV fading, and machined to tolerances that the earlier aluminium GMT bezels could not achieve. The blue and black two-colour Cerachrom construction requires a more complex manufacturing process than a single-colour bezel — the two shades are produced simultaneously in a single piece. A decade of production examples from the 116710BLNR era confirms that the blue and black Cerachrom holds its colours and finish in a way that aluminium bezels from earlier GMT generations do not.

Official Specs:

• Reference: 126710BLNR (Oyster bracelet — sub-reference 126710BLNR-0003)
• Nickname: Batman
• Case: 40mm Oystersteel, monobloc middle case, screw-down caseback and crown
• Bezel: Bidirectional rotatable 24-hour graduated bezel, two-colour blue and black Cerachrom ceramic insert, moulded numerals and graduations, platinum-coated markers
• Crystal: Scratch-resistant sapphire, Cyclops lens over date
• Caseback: Solid, screwed
• Water resistance: 100m / 10 bar / 330ft
• Crown: Screw-down, Triplock triple waterproofness system
• Dial: Black, Chromalight display (long-lasting blue luminescence)
• Hands: Mercedes-style hour hand (GMT hand in contrasting colour for second time zone)
• Bracelet: Oyster three-piece solid links, Oystersteel, folding Oysterlock safety clasp with Easylink 5mm comfort extension
• Movement: Calibre 3285, self-winding, manufacture Rolex
• Frequency: 28,800 vph (4 Hz)
• Power reserve: Approximately 70 hours
• Hairspring: Parachrom (paramagnetic blue, highly resistant to magnetic fields)
• Shock absorbers: Paraflex high-performance
• Functions: Hour, minute, seconds; 24-hour GMT display; independent rapid-setting second time zone hour hand; instantaneous date with Cyclops; stop-seconds
• Accuracy: −2/+2 seconds per day (Superlative Chronometer, post-casing)
• Certification: Superlative Chronometer
• Included: Original Rolex boxes, manuals, warranty card, hang tag — full set

What’s Included:

This example is 2026, brand new, presented on the Oyster bracelet, and accompanied by the full set including the warranty card. It is in stock in Perth with immediate availability.

Calibre 3285 — the current GMT movement

Calibre 3285 replaced the Calibre 3186 in the GMT-Master II line from 2019 and is the movement fitted to this 126710BLNR. The headline improvement is the power reserve: 70 hours against the 48 hours of the 3186. The Chronergy escapement — Rolex’s proprietary design — achieves approximately 15% greater energy efficiency than conventional Swiss lever escapements, which is how the power reserve gain is largely achieved. A new variable-inertia balance wheel improves rate stability. The Parachrom hairspring provides strong resistance to magnetic fields and physical shock.

The second time zone function on the 3285 allows the GMT hour hand — the additional hand with the distinctive arrow or lollipop tip — to be set independently in one-hour increments without stopping the watch. This is the jump-hour mechanism that separates the GMT-Master II from the original GMT-Master: the II designation indicates this independently settable GMT hand, as opposed to setting via the seconds hand or date mechanism. For travellers, this means the reference time zone can be adjusted at arrival without disrupting the local time display.

Oyster bracelet on the current Batman

The 126710BLNR is available on both the Jubilee and Oyster bracelet. This example is the Oyster hence “Batman” — the three-piece solid link bracelet in brushed and polished Oystersteel that has been the GMT-Master’s original bracelet configuration since the reference was introduced in 1955. Where the Jubilee (five-link) brings a dressier character to the current-generation “Batgirl”, the Oyster bracelet keeps the reference closer to its professional tool-watch roots: robust, purposeful, and correct for the history of the GMT-Master design.

The Oyster bracelet here includes the Oysterlock folding safety clasp and Easylink 5mm comfort extension — a micro-adjust mechanism that allows the bracelet length to be extended by 5mm without tools, accommodating temperature variation and sleeve thickness.

Buying from Calibre24

Calibre24 is a Perth-based dealer specialising in pre-owned and new Rolex, Patek Philippe, Audemars Piguet, Vacheron Constantin, and Richard Mille. Every piece is authenticated in-house before listing. This 126710BLNR ships fully insured to any address in Australia. Viewings by appointment in Perth. Trade-in and consignment available.

FAQ block

What is the Rolex GMT-Master II Batman 126710BLNR? The 126710BLNR, nicknamed the “Batman,” is the current-generation Rolex GMT-Master II with a two-colour blue and black Cerachrom ceramic bezel. The blue half of the 24-hour bezel represents daylight hours, the black represents night — the combination earned the Batman nickname when the blue and black configuration first appeared on the 116710BLNR in 2013, and the name carried over to the current 126710BLNR introduced in 2019. It is powered by Calibre 3285 with a 70-hour power reserve, rated to 100m water resistance, and available on Oyster or Jubilee bracelet.

Is this Rolex GMT-Master II Batman available in Australia? Yes. This brand new 2026 126710BLNR is held in stock in Perth by Calibre24 and ships fully insured across Australia, including Sydney, Melbourne, Brisbane, and Adelaide. Viewings by appointment in Perth.

What is the difference between the Rolex GMT-Master II Batman 126710BLNR and the Pepsi 126710BLRO? Both are current-generation GMT-Master II references in 40mm Oystersteel with Calibre 3285 and full Cerachrom bezels. The Batman (126710BLNR) has a blue and black bezel with a black dial. The Pepsi (126710BLRO) has a blue and red bezel with a black dial. The Pepsi’s red and blue configuration references the original 1955 GMT-Master bezel.

What is the difference between the 116710BLNR and the 126710BLNR? The 116710BLNR was the previous-generation Batman, produced from 2013 to 2019. The 126710BLNR replaced it at Baselworld 2019. Key differences: the 126710BLNR uses Calibre 3285 (70-hour power reserve) against the 3186 (48-hour) in the 116710BLNR; the case was updated with slightly shorter, more curved lugs and integrated end-links for both the Oyster and Jubilee bracelet; and the crown logo between “Swiss” and “Made” was added to the dial. The Cerachrom bezel and 40mm Oystersteel case dimensions are unchanged.

What does the GMT function on the 126710BLNR do? The GMT-Master II’s movement (Calibre 3285) drives four hands and a date window. The standard hour and minute hands display local time. A fourth GMT hand — typically with a distinctive tip — points to a 24-hour scale on the bidirectional rotating Cerachrom bezel, displaying a second time zone simultaneously. The “II” in GMT-Master II refers to the independently settable GMT hour hand: the local hour hand can be adjusted in one-hour increments without stopping the watch and without disturbing the GMT hand, allowing rapid resetting for a new time zone on arrival.

What is Cerachrom on the Rolex GMT-Master II bezel? Cerachrom is Rolex’s proprietary ceramic compound used for the GMT-Master II’s bidirectional rotating bezel insert. It is virtually scratchproof and immune to UV fading — neither characteristic of the earlier aluminium GMT bezels. The blue and black two-colour Cerachrom insert on the 126710BLNR is produced as a single piece with two simultaneous colours, a more complex manufacturing process than a single-colour bezel. The numerals and graduations are moulded into the ceramic and the markers are platinum-coated by vacuum deposition.

What is Calibre 3285 in the Rolex GMT-Master II? Calibre 3285 is the manufacture Rolex movement fitted to the current GMT-Master II line from 2019. It beats at 28,800 vph, delivers approximately 70 hours of power reserve, and is certified to Rolex’s Superlative Chronometer standard of ±2 seconds per day after casing. It features the Chronergy escapement (approximately 15% more efficient than conventional Swiss lever escapements), a Parachrom hairspring for magnetic and shock resistance, and Paraflex shock absorbers. The movement’s independently settable GMT hour hand allows the second time zone to be adjusted in one-hour steps without stopping the watch.

Can I sell or trade in my Rolex at Calibre24? Yes. Calibre24 buys and takes consignment on Rolex and other high-end references. Contact us for a current valuation.