This Omega Speedmaster Chronograph SS Black Dial - 3188.8.131.52.01.001 has been worn and comes with box, papers, and booklet.
Stainless steel case with a stainless steel bracelet. Fixed stainless steel bezel with a black aluminium top ring showing tachymeter markings. Black dial with rhodium-plated hands and index hour markers. Tachymeter scale around the outer rim. Dial Type: Analog. Luminescent hands and markers. Chronograph - three sub-dials displaying: 60 second, 30 minute and 12 hours. Omega calibre 3330 automatic movement with a 52-hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Solid case back. Round case shape. Case size: 38 mm. Case thickness: 13.2 mm. Band width: 18 mm. Fold over clasp with a push button release. Water resistant at 100 meters / 330 feet.