Rolex Cosmograph Daytona 126502 'Rolesium': Grand Feu Enamel, Grey Ceramic, and a Transparent Caseback — W&W 2026
Watches3 min readApr 14, 2026

Rolex Cosmograph Daytona 126502 'Rolesium': Grand Feu Enamel, Grey Ceramic, and a Transparent Caseback — W&W 2026

At Watches & Wonders 2026, Rolex drops the Daytona 126502 in Rolesium — a white grand feu enamel dial, a brand-new anthracite grey ceramic bezel, and a first-ever open caseback on this configuration, priced at $57,800.

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Description

The Rolex Cosmograph Daytona Reference 126502 is the most technically and aesthetically ambitious Daytona unveiled at Watches & Wonders 2026. Rolex calls the combination of Oystersteel and platinum "Rolesium," and on the 126502 that pairing frames a white grand feu enamel dial — a first on this configuration — beneath a brand-new anthracite grey ceramic bezel. For the first time outside limited platinum editions, an open sapphire caseback exposes Calibre 4131 to view. At $57,800 it occupies the same price territory as many complications, yet its claim to value rests on material and craft quality alone.

Design

The 126502's face is defined by the grand feu enamel dial: powdered glass fired repeatedly above 800 °C until it achieves a perfectly flat, glass-smooth surface with a luminosity no printed or lacquered dial can replicate. Against this white field, the three Daytona sub-registers read with exceptional clarity. The anthracite grey ceramic bezel is a new colour for the Daytona family — cooler and more restrained than the black ceramic of the 116500LN, and a deliberate contrast to the warm Rolesium case metal. Platinum crowns and pushers provide tactile differentiation. The Oyster bracelet links combine brushed and polished Oystersteel with platinum centre links, creating a layered visual rhythm that carries the Rolesium palette across the whole watch.

Specifications

  • Reference: 126502
  • Case: 40mm × 11.90mm, Oystersteel
  • Bezel: Anthracite grey ceramic (new colour), tachymètre scale
  • Crystal: Sapphire front; transparent sapphire caseback (first on this config)
  • Bracelet: Oyster, Oystersteel with platinum centre links
  • Dial: White Grand Feu enamel; three sandblasted sub-dials
  • Movement: Calibre 4131 (in-house, automatic, integrated chronograph)
  • Escapement: Chronergy (nickel-phosphorus lever & escape wheel)
  • Frequency: 28,800 vph (4 Hz)
  • Power reserve: ~72 hours
  • Water resistance: 100m
  • Certification: Superlative Chronometer (±2 sec/day)
  • Price: $57,800 USD

What's Exciting

Three firsts stack on a single reference. Grand feu enamel on a mainstream steel/platinum Daytona is unprecedented — this is a craft technique normally reserved for Rolex's rarest special editions and pocket-watch-inspired dress pieces. The anthracite grey bezel opens a new colour axis in the Daytona range, immediately making the 126502 visually distinct from every other chronograph Rolex produces. And the transparent caseback — showing Calibre 4131's Côtes de Genève finishing, Parachrom hairspring, and oscillating weight — is the first time Rolex has made this view available on a Daytona in this material pairing. Collectors who have always wanted a "display back Daytona" now have one, and it comes wearing the most exquisite dial in the current Daytona catalogue.

History

The Cosmograph Daytona traces its origins to 1963, when Rolex introduced the Reference 6239 as a purpose-built racing chronograph — its name later attached to the Daytona International Speedway in Florida. The steel Daytona remained a slow seller for most of its early decades, only achieving legendary status in the 1980s and 1990s when secondary market premiums began to soar. The modern era of the Daytona began with the Reference 116520 in 2000, which introduced the in-house Calibre 4130 and cemented the model's status as Rolex's most sought-after sporting watch. The 2016 Reference 116500LN introduced ceramic to the Daytona line for the first time. The 126502 Rolesium at Watches & Wonders 2026 represents the boldest material and craft departure in the Daytona's history since that 2000 pivot to an in-house movement.

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