Analog watch with fixed black tachymeter bezel showing markings. Black dial features yellow gold-tone hands and diamond markers/hour indicators, minute markers around the outer rim, luminescent properties on hour marks/hands. Includes screw-down crown, solid case back, round 40 mm 18kt Yellow Gold Case. Oyster clasp closure with black rubber strap. Equipped with the Calibre 4130 Automatic chronograph movement from Rolex family (based on Calibre 4030), containing 44 Jewels and operating at a frequency of approximately 28,800 v.p.h., offering around 72 hours power reserve. Features three sub-dials displaying the function for measuring seconds up to 60-second, 30-minute, and 12-hour readings simultaneously. Scratch resistant sapphire crystal face is present. Water resistant capability is approximately 100 meters / 330 feet. Functions include chronograph operation (three sub-dials), analog hour/minute display with small second function, and timekeeping using the COSMOGRAPH Daytona Series reference system designated Model Number: 116518BKDR. This watch carries a pre-owned label but comes from the Luxury Watch category, Swiss Made origin.