🔹 Overview
The RL Cosmograph Daytona Ref. 116508-0013, nicknamed the “John Mayer Daytona,” is one of the most sought-after modern Daytona references. Introduced in 2016, it is crafted entirely from 18 ct yellow gold and features a rare green sunburst dial that shimmers with tonal depth under varying light. Catapulted to fame when highlighted by musician and collector John Mayer, this model has since become a modern icon, combining exclusivity, bold aesthetics, and RL’s legendary chronograph pedigree.

💎 Key Specifications
Reference: 116508-0013
Case: 40 mm Oyster case in 18 ct yellow gold
Bezel: Fixed tachymetric bezel in engraved 18 ct yellow gold (scale up to 400 units/hour)
Dial: Green sunburst dial with golden indices, Chromalight luminous markers, and red chronograph accents
Crystal: Scratch-resistant sapphire
Bracelet: Oyster bracelet in 18 ct yellow gold with Oysterlock safety clasp and Easylink 5 mm extension
Movement: RL Calibre 4130, self-winding mechanical chronograph
Functions: Central chronograph seconds; 30-minute counter at 3 o’clock; 12-hour counter at 9 o’clock; small seconds at 6 o’clock; tachymetric scale
Power Reserve: ~72 hours
Water Resistance: 100 m / 330 ft
Certification: Superlative Chronometer (COSC + RL after casing, −2/+2 sec/day)

⏱️ Movement
Type: Perpetual, mechanical, self-winding chronograph
Caliber: RL Calibre 4130
Features: Column wheel and vertical clutch for smooth chronograph operation; paramagnetic blue Parachrom hairspring; Paraflex shock absorbers
Frequency: 28,800 vph (4 Hz)
Jewels: 44+
Accuracy: −2/+2 seconds per day (Superlative Chronometer)
Power Reserve: Approximately 72 hours

✅ Conclusion
The RL Cosmograph Daytona Ref. 116508-0013 is a perfect blend of exclusivity, performance, and aesthetic brilliance. Its radiant green dial contrasted against the full yellow-gold construction makes it instantly recognizable and highly desirable among collectors. With the robust Calibre 4130 at its core, it ensures precision, reliability, and mechanical excellence. Revered as a cult classic, the “John Mayer Daytona” is more than a timepiece—it is a statement of individuality, prestige, and modern horological legend.