The Rolex Daytona reference 116518LN is a notable member of the iconic Daytona collection, known for its association with motorsports and racing. Here's a description: Material: The case of the Rolex Daytona 116518LN is crafted from 18-carat yellow gold, offering a luxurious and eye-catching appearance. Case Size: With a case diameter of 40mm, the watch maintains a balanced and versatile size suitable for various wrists. Black Cerachrom Bezel: The watch features a black monobloc Cerachrom bezel, which is highly resistant to scratches and fading. The engraved tachymetric scale allows for measuring average speeds over a given distance, a key feature for racing enthusiasts. Chronograph Function: The Daytona is renowned for its chronograph functionality, allowing precise measurement of elapsed time. The pushers and screw-down crown contribute to the watch's water resistance. **Black Dial:** The black dial serves as a sleek and elegant backdrop for the three contrasting gold sub-dials, indicating the chronograph functions. Luminescent hour markers and hands ensure readability in various lighting conditions. Oysterflex Bracelet: The 116518LN is often paired with the Oysterflex bracelet. Despite its sporty and modern appearance, the bracelet combines the robustness of metal with the flexibility and comfort of elastomer. Rolex Caliber 4130: Powering the Daytona is the Rolex in-house self-winding Caliber 4130 movement. This chronograph movement is known for its precision, reliability, and efficiency. Rolex's Superlative Chronometer Certification: The watch carries the Superlative Chronometer certification, indicating that it has passed Rolex's stringent accuracy and performance tests.