A Rolex men's Cosmograph Daytona chronograph watch features an automatic movement (Calibre 4130) rated as a chronometer. Constructed from white gold with a domed caseback; the fixed bezel displays tachymetric markings set with diamonds and includes a diamond hour markers pave dial. It possesses luminous hands for improved readability in low light conditions, and is powered by an approximately 72-hour power reserve mechanism operating at 28,800 vph (4Hz). The sapphire crystal provides scratch resistance while the screw-down crown enhances water resistance up to 100 meters or 330 feet. This analog dial round timepiece measures 40 mm in diameter and features a tang clasp closure.
