Stainless steel case with a stainless steel rolex oyster bracelet. Fixed stainless steel bezel with engraved tachymeter markings . Black dial with silver-tone hands and stick hour markers. Minute markers around the outer rim. Dial Type: Analog. Luminescent hands and dial markers. Chronograph - three sub-dials displaying: 60 seconds, 30 minutes and 24 hours. Automatic movement with a 72-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Case diameter: 40 mm. Round case shape. Oyster clasp. Water resistant at 100 meters / 330 feet. Functions: chronograph, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Item Variations: 116520, 116520-BKSO, Rolex-116520, Rolex-116520-BKSO. Rolex Cosmograph Daytona Black Dial Stainless Steel Rolex Oyster Automatic Mens Watch 116520BKSO.