Stainless steel case with a black leather strap. Fixed bezel. Black dial with luminous hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Chronograph - sub-dials displaying: two - 60 second and 30 minute. Manual wind movement. Ap caliber 2889 engine. Scratch resistant sapphire crystal. Pull / push crown. Skeleton transparent exhibition see through case back. Case diameter: 44 x 58 mm. Round case shape. Push button fold over clasp. Water resistant at 20 meters / 60 feet. Functions: chronograph, date, hour, minute, second. Luxury watch style. Watch label: Swiss Made. Audemars Piguet Royal Oak Tourbillion Black Dial Chronograph Mens Watch 25977ST.OO.D002CR.01.