Silver-tone stainless steel case with silver-tone stainless steel oyster bracelet and fixed bezel. Black analog dial featuring Roman numeral hour markers, minute markers at the outer rim, and silver-tone hands. Equipped with a Rolex Calibre 3135 automatic chronometer movement containing 31 jewels, beating at 28800 vph (4 Hz), offering approximately 48 hours of power reserve. Includes date display at the 3 o'clock position and screw-down crown. Solid case back. Round shape in size BKRO-72600: 36 mm. Features fold over clasp with safety release, scratch-resistant sapphire crystal, and water resistance up to 100 meters (approx. 330 feet). Style is luxury menswear; Swiss Made.