Rolex GMT-Master II “Bumblebee / Zombie” 40mm Black Dial Black & Grey Cerachrom Bezel Two-Tone Yellow Rolesor Jubilee Bracelet 126713GRNR | 2025 Full Set

The GMT That Rewrote the Two-Tone Rulebook

The Rolex GMT-Master II 126713GRNR carries two nicknames — “Bumblebee” and “Zombie” — and both tell meaningful stories about the watch. “Bumblebee” acknowledges the visual contrast between the yellow gold accents of the case, bracelet, and bezel ring against the darkness of the black Cerachrom bezel insert and black dial — the classic black-and-gold color palette of the insect that inspired it. “Zombie” emerged when collectors began to notice that the grey half of the two-tone ceramic bezel insert, under certain lighting conditions and angles, takes on an eerie, almost lifeless tone that shifts between warm and cool — giving the watch a dynamic, slightly unpredictable character that most two-colour bezels don’t possess. Together, the two nicknames capture what makes the 126713GRNR unlike any other GMT-Master II in the current catalog: it is simultaneously the most opulent and the most subtly complex bezel configuration in the lineup, and it introduced for the first time in Rolex history a steel-and-yellow-gold GMT-Master II paired with the five-link Jubilee bracelet. This 2025 full-set example is among the most current production available anywhere on the secondary market.

Yellow Rolesor Construction: 904L Oystersteel and Solid 18k Yellow Gold

The 40mm Oyster case is built in Rolex’s Yellow Rolesor construction, pairing a 904L stainless steel monobloc middle case with solid 18k yellow gold applied throughout the most visually prominent surfaces: the bezel ring, the screw-down crown, the crown guards, and the center links of the Jubilee bracelet. Rolex’s 904L stainless steel is a high-corrosion-resistant proprietary alloy that takes a deeper, more mirror-like polish than the 316L steel used by most competing manufacturers and maintains that polish across decades of daily wear. The stunning stainless steel case features high polished sides and matte brushed lugs — a dual-finish approach that creates a sophisticated layering of textures and light reflection across the case surface. The combination of brushed steel and polished yellow gold across the same watch creates a visual dynamic that reads more elegant and more considered than either material alone could achieve. The case is sealed with a screw-down Triplock triple-waterproofness crown, delivering 100 meters of water resistance — and the case back screws down securely with precision Rolex tooling to maintain the full environmental seal.

The Black and Grey “Zombie” Cerachrom Bezel — A Technical Marvel

The bidirectional rotating 24-hour bezel of the 126713GRNR is one of the most technically and visually sophisticated bezel configurations Rolex has ever produced. The Cerachrom ceramic insert is manufactured in two distinct colour sections — black and grey — bonded together at the precise midpoint and fired at extremely high temperatures to create a seamless, single-piece ceramic insert with no visible joint, adhesive, or mechanical transition. The grey portion develops its “Zombie” character from its unusual visual behavior: unlike the blue, red, or green ceramic inserts used on other GMT references — which are stable in their color presentation — the grey half of the 126713GRNR insert shifts subtly between warm and cool tones depending on the light source, viewing angle, and ambient conditions. Under warm yellow light, the grey reads almost tan; under cool or UV light, it takes on a distinctly eerie, muted quality — the effect that earned it the Zombie name. The 24-hour numerals and markers are filled with yellow gold via PVD deposition — physically embedded in the ceramic surface rather than applied on top, making them as permanent as the bezel itself. The solid 18k yellow gold bezel ring frames the ceramic insert, and the combination of yellow gold ring and dark ceramic creates the bold Bumblebee contrast that is visible from across a room. The bezel rotates bidirectionally in 60 crisp, precise clicks, allowing the tracking of a second or even a third time zone when used in combination with the GMT hand and local hour hand.

The Black Chromalight Dial — Deep, Legible, and Gold-Accented

The black dial is framed by the distinctive two-tone bezel, delivering strong visual identity with the toughness of ceramic. Applied luminescent hour markers and Mercedes-style hands in steel are filled with Chromalight — Rolex’s proprietary long-lasting luminescent material that emits a distinctive, intense blue glow in darkness, providing exceptional legibility in all light conditions. The arrow-tipped 24-hour GMT hand is finished in a contrasting tone to immediately distinguish it from the regular hour hand at a glance, completing one revolution every 24 hours and read against the ceramic bezel’s 24-hour scale to display a home or reference time zone. A date window sits at 3 o’clock beneath the Cyclops magnifying lens, and the Rolex-engraved rehaut runs the inner circumference of the bezel edge as both an authentication detail and a design refinement. The black dial’s depth and uniformity provide the perfect backdrop for the yellow gold accents of the bracelet center links and bezel ring to register against — the contrast between the warm gold and the dense black of the dial creating the Bumblebee’s signature drama from the moment the watch catches the light.

The Two-Tone Jubilee Bracelet — A First for the Steel-and-Gold GMT

The five-link Jubilee bracelet on the 126713GRNR is one of the most discussed and celebrated details of this reference among collectors — and for good reason: it was the first time in Rolex history that a steel-and-yellow-gold GMT-Master II was offered on the Jubilee bracelet, departing from the three-link Oyster that had always been the GMT’s natural bracelet pairing in the two-tone configuration. The result transforms the watch’s character entirely. The Jubilee’s five smaller, more finely articulated links combine brushed steel outer links with high-polished yellow gold center links, continuing the Rolesor two-tone theme across the full length of the wrist in a cohesive, unified presentation. The bracelet flows into an Oysterlock safety clasp with matching finishing — polished gold down the center, brushed steel on the sides — and houses the Easylink 5mm comfort extension system for quick tool-free adjustment. The balance of steel and yellow gold is convincing, and paired with the comfort of the Jubilee, it is easy to forget you are wearing a two-tone at all — shifting smoothly from the airport to a boardroom to a dinner table without ever requiring a change of watch or a second thought.

Powered by Caliber 3285 — Rolex’s Most Advanced GMT Movement

The 126713GRNR is powered by the Rolex Caliber 3285, the most technically advanced movement Rolex has ever produced for the GMT-Master II lineup and a substantial upgrade over the Caliber 3135 it replaced. The Chronergy escapement — machined from nickel-phosphorus — delivers approximately 15% greater energy efficiency than a conventional Swiss lever escapement while providing outstanding resistance to magnetic fields. The blue Parachrom hairspring made from a proprietary zirconium-niobium alloy is virtually unaffected by temperature fluctuations, shocks, or magnetic interference, and Paraflex shock absorbers provide additional structural resilience against impact. The movement runs on 31 jewels at 28,800 vibrations per hour, with a 70-hour power reserve — a significant improvement over the 48-hour reserve of the previous generation. The local hour hand adjusts independently via the crown’s rapid-setting position, allowing seamless time zone changes without stopping the movement or disturbing the GMT hand’s reference time display. The movement carries Rolex’s Superlative Chronometer certification, guaranteeing accuracy of -2/+2 seconds per day after casing — twice as strict as standard COSC requirements.

Condition & What’s Included

This 2025 production example comes as a full set with original Rolex box, papers, and all accompanying documentation — including watch pillow, warranty card, warranty booklet, manual, leather card holder, and Rolex hang tags. Authenticity is fully guaranteed on every watch sold through The Crown Collection Watch.

Shipping & Payment

This watch ships at $19,200 fully insured worldwide. A 5% discount is available for cryptocurrency payments. Leave a message to place your order or request additional photos.

Why This Reference Stands Out

The 126713GRNR carries a distinction no other current GMT-Master II reference can claim: it is the only two-tone steel-and-yellow-gold GMT in current production paired with the Jubilee bracelet, the only GMT reference with a black-and-grey Cerachrom insert, and the most versatile dress-sport GMT configuration in the lineup — equally at home in a suit as it is on a long-haul flight or a weekend adventure. The yellow gold highlights bring luxurious contrast to the otherwise utilitarian design, making it suited for globetrotting or formal occasions in equal measure. Secondary market data from 2026 confirms examples of this reference trading in the $19,000 to $26,000 range depending on production year and condition, with full-set 2025 examples among the strongest performers. At $19,200 for a 2025 full-set example, this listing represents one of the most compelling and competitively priced opportunities currently available for the most distinctive two-tone GMT Rolex currently produces.