Rolex Cosmograph Daytona 40 mm Ref. M126503‑0003

Rolex Cosmograph Daytona 40 mm Yellow Rolesor Ref. M126503‑0003

The Rolex Cosmograph Daytona M126503‑0003, crafted in Yellow Rolesor (Oystersteel and 18 kt yellow gold), perfectly blends technical precision with elegant two-tone aesthetics. A modern evolution of Rolex’s legendary racing chronograph, this model features a bold black dial with gold-finished sub-dials and bezel—ideal for enthusiasts of both performance and style.

Its 40 mm Oyster case merges robust 904L stainless steel with a fixed yellow-gold bezel etched with a tachymetric scale—a hallmark of Daytona’s racing heritage. The crisp black lacquer dial with spray-coated counters displays Chromalight-coated Rolex gold hour markers and hands, ensuring excellent legibility in all lighting conditions.

Powered by the Rolex-manufactured Caliber 4131, this chronograph offers a 72-hour power reserve, vertical clutch and column wheel for smooth stopwatch operations, and Superlative Chronometer precision (–2/+2 s/day). Water resistance up to 100 m and sapphire crystal complete its robust yet refined profile.

Strapped on the iconic Oyster bracelet in Yellow Rolesor, it features brushed steel outer links and polished gold center links, along with an Oysterlock clasp and Easylink 5 mm comfort extension for optimal fit and wearability.

Key Specifications:

• Reference: M126503‑0003

• Case Size: 40 mm

• Case Material: Yellow Rolesor – Oystersteel & 18 kt Yellow Gold

• Bezel: Fixed yellow gold bezel with engraved tachymetric scale

• Dial: Black lacquer with gold-tone spray-coated counters, gold hour markers with Chromalight display

• Movement: Rolex Caliber 4131, self‑winding chronograph, Superlative Chronometer (–2/+2 s/day), ~72‑hour power reserve

• Functions: Hours, minutes, small seconds, chronograph, tachymeter

• Bracelet: Yellow Rolesor Oyster bracelet, Oysterlock clasp with Easylink extension

• Crystal: Scratch‑resistant sapphire with Cyclops lens over date

• Water Resistance: 100 m / 330 ft (10 ATM)

Conclusion:

The Rolex Cosmograph Daytona Ref. M126503‑0003 is a harmonious union of performance and elegance. Its two-tone design, precision chronograph movement, and refined finishes make it a distinguished choice for collectors and connoisseurs. Whether worn on the track or at a formal event, it embodies the spirit of Rolex’s racing legacy with modern sophistication.