Rolex opened Watches & Wonders 2026 with the most unexpected addition to the Daytona line in years. The new Cosmograph Daytona Rolesium reference 126502 is a 40mm chronograph that, at first glance, looks like the standard steel 126500LN. Look closer and almost everything is different — a white Grand Feu enamel dial without the traditional contrasting subdial rings, an entirely new anthracite Cerachrom bezel with horizontally-aligned vintage-inspired tachymeter, and, for the first time on a steel-cased Daytona, an open caseback that reveals the caliber 4131. This is the most exclusive Daytona Rolex has ever made that wasn’t built from precious metal.
What Rolesium Means on the Cosmograph Daytona Rolesium
Rolesium is a Rolex naming convention introduced in 1999 for the original Yacht-Master, denoting a combination of Oystersteel with platinum elements. The Cosmograph Daytona Rolesium uses an Oystersteel middle case paired with a platinum bezel ring and a platinum exhibition caseback ring. The bracelet remains all-Oystersteel — three-link Oyster construction with brushed outer links and mirror-polished centers, secured by an Oysterlock folding clasp with the 5mm Easylink comfort extension. The result is a watch that plays the long Daytona steel game while incorporating just enough platinum to qualify as something rarer.
The Grand Feu Enamel Dial and New Anthracite Cerachrom Bezel
The dial is the visual headline. Rolex has equipped this Daytona with a white Grand Feu enamel dial, a process the brand has rarely brought to modern production. Four ceramic plates — one for the main dial, three for the chronograph counters — are coated with vitrified white enamel and fired to create a glossy, deep-white surface. The plates are then assembled onto a brass base. There are no contrasting subdial rings, giving the dial a uniform, monochromatic surface that subtly references the porcelain-dial Daytona reference 16520 from 1988. White-gold hour markers with Chromalight luminous material complete the assembly.
Rolex developed an entirely new bezel for the Cosmograph Daytona Rolesium. The anthracite Cerachrom monobloc ceramic ring is composed of zirconia enriched with tungsten carbide, which produces a denser, darker grey than the brand’s previous black ceramic. The tachymeter scale is restyled — horizontally-engraved numerals replace the radial layout of the standard 126500LN, with intermediate baton markers, small dots next to the numerals, and a vintage-style succession of 160-150-140 markings. The look references 1960s acrylic-bezel Daytonas while delivering modern ceramic durability.
What’s Inside the Cosmograph Daytona Rolesium
The caliber 4131 is finally visible. Through the sapphire exhibition caseback, you can see Rolex’s in-house chronograph movement with its Chronergy escapement, column wheel, vertical clutch, and 72-hour power reserve. The bridges carry Côtes de Genève decoration. The cut-out oscillating weight is finished in yellow gold. Operating at 4 Hz with Superlative Chronometer certification regulated to within ±2 seconds per day, the caliber 4131 has only previously been visible on the platinum 126506 and the Le Mans editions in white and rose gold. This is the first time it appears in a predominantly steel watch.
For decades, the steel Daytona has been the cornerstone of the collection. There has only ever been the white-dial panda and the black-dial reverse-panda. Rolex has now added a third path that doesn’t fit either mold — a watch that looks like neither, costs three times as much, and probably won’t be sitting on any waiting list a normal collector can join. The 126502 is an off-catalog release, available only as a special order through select Rolex retailers. The $57,800 MSRP is more than three times the regular steel Daytona’s $16,900. It is positioned as a true grail piece, not a mainstream commercial release.
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