The Rolex Cosmograph Daytona (40 mm) is a highly sought-after luxury watch that is designed for professional racing drivers. It features a chronograph function that allows for precise timing of laps and speeds, as well as a tachymeter bezel that can be used to calculate average speeds. The watch is made with high-quality materials, including a scratch-resistant sapphire crystal and a durable stainless steel or gold case. As a valuable investment piece, it is important to protect the watch from scratches and damage with a high-quality screen protector.