Silver-tone stainless steel case, black ceramic unidirectional bezel, black dial with silver tone hands and indices. Analog display features minute markers on the outer rim and luminous elements for enhanced legibility in low light. Includes date window at the 3 o'clock position. Powered by Rolex Calibre 3135 automatic movement, boasting 28,800 vph frequency and approximately 48-hour power reserve, with a chronometer rating. Scratch-resistant sapphire crystal protects the dial. Silver-tone stainless steel Oyster bracelet is screw-down for security. Solid case back adds durability. Round shape measures 40 mm in diameter and features an 12 mm thickness. Band width is 15.5 mm, length set to 7.5 inches (approx). Equipped with a fold over clasp that includes a safety release mechanism. Rated water resistant up to 300 meters / 1000 feet depth suitable for diving functions.