Omega Speedmaster Racing Chronograph 3188.8.131.52.04.001 Steel case, diameter 40mm. Water resistant to 100 meters. Automatic Omega Calibre 3330 chronograph movement, Free sprung-balance equipped with Si14 silicon balance spring and a power reserve of 52 hours. White dial with Luminous hour markers and hands. Black sub dials with a textured “Clous de Paris” pattern and yellow hands. Yellow five-minute countdown tracker on the outer dial, 12-hour recorder at 6 o’clock and a small seconds dial at 9 o’clock. Date window located at the 6 o’clock position. Matt black Tachmetre bezel. Black rubber Speedmaster strap with steel folding clasp. Box and papers dated March 2016.