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

Two Nicknames, One Extraordinary Watch — Bumblebee and Zombie in 2025

The Rolex GMT-Master II 126713GRNR carries two collector nicknames that tell the full story of its character. “Bumblebee” acknowledges the visual contrast between the warm yellow gold accents of the case, bracelet center links, and bezel ring against the deep darkness of the black Cerachrom bezel insert and black dial — the classic black-and-gold palette of the insect that inspired it. “Zombie” emerged from the grey half of the two-colour ceramic bezel insert, which carries an unusual and uniquely dynamic visual behavior: under warm yellow light, it reads almost tan; under cool or UV light, it takes on an eerie, muted, shifting quality that gives the watch a distinctly unpredictable personality. Together, the two nicknames capture what makes the 126713GRNR unlike any other GMT-Master II in the current catalog: the most subtly complex bezel configuration in the lineup, combined with the first-ever two-tone Jubilee bracelet on a steel-and-gold GMT. This 2025 brand-new full-set example represents the most current production of this reference — with factory warranty intact across every surface.

The Reference That Rewrote the Two-Tone GMT Rules

When Rolex introduced the 126713GRNR, it did something it had never done in the GMT-Master II family: it paired a steel-and-yellow-gold case with the Jubilee bracelet. Every previous two-tone steel-and-gold GMT had been fitted exclusively to the Oyster bracelet. The Jubilee configuration transformed the character of the two-tone GMT entirely — giving it a dressier, more elegant, more historically resonant wrist presence that the Oyster bracelet’s more angular, more sport-forward profile cannot achieve. The Jubilee bracelet has been the most historically significant GMT-Master bracelet pairing since the 1950s and 1960s, when the earliest Pepsi GMT-Masters were most naturally paired with the five-link Jubilee. The 126713GRNR honors that history while introducing an entirely new bezel color palette that has no precedent in the modern GMT-Master II lineup.

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

The 40mm Oyster case is built in Yellow Rolesor — Rolex’s combination of 904L stainless steel with solid 18k yellow gold on the bezel ring, crown, crown guards, and Jubilee bracelet center links. 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. The case features high-polished sides and satin-brushed lugs, a dual-texture presentation that creates the characteristic interplay of warm gold and cool steel from every viewing angle. The case is sealed with a screw-down Triplock triple-waterproofness crown delivering 100 meters of water resistance, and a scratch-resistant sapphire crystal with Cyclops magnifying lens sits over the date window at 3 o’clock.

The Black and Grey “Zombie/Bumblebee” Cerachrom Bezel — Two Names for One Extraordinary Detail

The bidirectional rotating 24-hour bezel of the 126713GRNR is one of the most technically complex and visually distinctive bezel configurations Rolex has ever produced. The Cerachrom ceramic insert is manufactured in two sections — one black, one grey — bonded at the precise midpoint and fired at extreme temperatures to create a seamless, structurally unified single piece with no visible joint or transition. The grey portion develops its “Zombie” character from its unusual tonal behavior: unlike the uniform, stable colors of other Cerachrom inserts, the grey half shifts subtly between warm and cool tones depending on the light source and viewing angle — giving the watch a living, slightly unpredictable quality that is unique to this specific bezel configuration. The 24-hour numerals and graduation marks are filled with yellow gold tone via Physical Vapour Deposition — physically embedded into the ceramic, matching the Everose gold ring, crown, and bracelet center links in a completely coordinated material story. The bezel rotates bidirectionally through 60 crisp, precise clicks — reflecting the dual-direction utility of a travel complication where measuring elapsed time in either direction is equally practical.

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

The black lacquered dial features applied luminescent Chromalight-filled hour markers and Mercedes-style hands — Rolex’s proprietary long-lasting luminescent material emitting an intense, distinctive blue glow in darkness. The arrow-tipped 24-hour GMT hand completes one revolution every 24 hours, read against the bidirectional bezel to display a home or reference time zone. The date is displayed at 3 o’clock beneath the Cyclops magnifying lens, and the Rolex-engraved rehaut provides an additional authentication detail visible at close inspection. Against the black dial, the warm yellow gold accents of the bracelet center links and bezel ring register with maximum visual impact — the Bumblebee’s signature color contrast at its most immediate.

The Two-Tone Jubilee Bracelet — Historic First, Exceptional Comfort

The five-link Jubilee bracelet on the 126713GRNR combines brushed steel outer links with polished yellow gold center links, continuing the Yellow Rolesor theme across the full length of the wrist in a cohesive, unified presentation. The fluid, articulated five-link construction delivers a wrist comfort that the three-link Oyster bracelet cannot match for extended daily wear — smaller, more closely articulated links distributing the watch’s weight more evenly and allowing the bracelet to conform naturally to the wrist’s movement. The bracelet closes with an Oysterlock safety clasp with matching finishing — polished gold center, brushed steel sides — and houses the Easylink 5mm comfort extension for quick tool-free on-wrist adjustment.

The GMT Complication — Three Time Zones at a Glance

The GMT-Master II’s local hour hand adjusts independently via the crown’s rapid-setting mechanism, advancing or retarding in one-hour increments without stopping the movement or disturbing the seconds accuracy. The result is three simultaneous time zones — local time on the hour hand, reference time on the GMT hand and bidirectional bezel, and the date at 3 o’clock — providing the complete informational needs of any international traveler in a single, effortless wrist glance.

Powered by Caliber 3285 — The Most Advanced GMT Movement Rolex Has Produced

The Caliber 3285 features the patented Chronergy escapement machined from nickel-phosphorus for approximately 15% greater energy efficiency and outstanding magnetic field resistance. The blue Parachrom hairspring made from a proprietary zirconium-niobium alloy is virtually unaffected by temperature fluctuations, shocks, or magnetic interference. Paraflex shock absorbers provide structural resilience. Running at 28,800 vibrations per hour with 31 jewels and a 70-hour power reserve, the movement carries Rolex’s Superlative Chronometer certification for accuracy of -2/+2 seconds per day after casing.

Condition & What’s Included

This 2025 example is brand new and comes as a complete full set with original Rolex box, papers, international guarantee card, warranty booklet, manual, hang tags, and all accompanying documentation. Factory warranty fully intact.

Shipping & Payment

This watch is priced at $23,500. Leave a message for further shipping details or additional photos.

Why This Reference Stands Out

The 126713GRNR is the only current-production GMT-Master II to combine steel-and-yellow-gold Rolesor construction with the Jubilee bracelet, the only GMT with a black-and-grey Cerachrom insert, and the most versatile dress-sport GMT configuration in the lineup — equally at home in a boardroom as on a long-haul flight or a weekend adventure. Secondary market data from 2026 confirms the 126713GRNR trading between $19,000 and $26,000 for full-set examples, with brand-new 2025 examples at the upper end of that range. At $23,500 for a brand-new 2025 full-set piece, this listing represents one of the most competitively priced new-condition Bumblebee acquisitions currently available on the secondary market.