Rolex Cosmograph Daytona Ref# M116518LN‑0041

🔹 Overview
The Rolex Cosmograph Daytona 40 mm Ref. M116518LN‑0041 is a premier expression of sporty sophistication and precision engineering. This striking chronograph is encased in solid 18 kt yellow gold and paired with a black Oysterflex elastomer strap, offering an eye-catching blend of luxury and athleticism. The contrasting white dial with black chronograph sub-dials provides a sleek, high-contrast aesthetic ideal for legibility and visual impact. Developed for precision timing and endurance, this Daytona merges iconic style with cutting-edge chronograph technology.

💎 Key Specifications

• Origin: Switzerland – part of Rolex’s legendary Oyster Perpetual Cosmograph Daytona collection

• Gender: Men’s / Unisex

• Case Diameter: 40 mm Oyster case in 18 kt yellow gold

• Case Material: 18 kt yellow gold, including screw-down case back and chronograph pushers with Triplock system (water resistance to 100 m / 10 ATM)

• Bezel: Fixed black Cerachrom ceramic with engraved tachymetric scale (up to 400 units per hour) in platinum deposit, scratch‑resistant and UV-stable

• Dial: White main dial with contrasting black snailed sub-dials (30-minute counter at 3 o’clock, 12-hour counter at 9 o’clock, running seconds at 6 o’clock)

• Hour Markers: Polished 18 kt yellow gold indices and hands, Chromalight luminescence for enhanced visibility in low light

• Bracelet Type: Oysterflex strap combining metal blades overmoulded with high-performance elastomer, secured by an Oysterlock safety clasp with 5 mm Easylink extension link

• Glass: Scratch-resistant sapphire crystal

• Water Resistance: Up to 100 meters (10 ATM), sealed with Triplock crown and pushers for full chronograph waterproofness

⏱️ Movement

• Type: Perpetual, mechanical, self‑winding chronograph, fully manufactured by Rolex

• Caliber: Rolex Calibre 4130 — a robust in-house chronograph movement featuring simplified architecture and fewer components for improved reliability and efficient winding

• Certification: Superlative Chronometer, rated to –2/+2 sec/day after casing

• Power Reserve: Approximately 72 hours, ensuring multi-day autonomy

• Frequency: 28,800 vph (4 Hz)

• Jewels / Hairspring / Shock Absorption: The automatic movement houses high-performance components including a vertical clutch, Parachrom hairspring, Chronergy escapement, and Paraflex shock absorbers for precision and resistance to magnetic fields

• Functions:

  • Central hours, minutes, and running seconds hands

  • Chronograph: central sweep‑seconds hand, 30‑minute counter at 3 o’clock, 12‑hour counter at 9 o’clock

  • Tachymetric bezel for measuring average speed up to 400 units/hour

✅ Highlight Summary
The Rolex Cosmograph Daytona Ref. M116518LN‑0041 is a dynamic fusion of sports performance and luxury refinement. Its 18 kt yellow gold case and high-contrast white-and-black dial deliver bold elegance, while the Oysterflex strap ensures comfort and durability for an active lifestyle. Powered by Rolex’s advanced Calibre 4130, this chronograph offers exceptional precision, reliability, and a 72-hour power reserve—making it ready at a glance, anytime. From the racetrack to a formal event, this Daytona is a statement piece and a precision instrument, preserving the legacy of Rolex’s iconic chronographs.