Omega 3188.8.131.52.01.005 Complete Details: Brushed finished stainless steel case with polished finished beveled corners. Polished stainless steel crown & buttons. Black bezel ring with Tachymeter scale. Matte black dial with stepped down sub-dials. Fine white printed minutes, seconds & fractions of a second index markers. Luminous painted index hour markers. White hands Central hands with luminous fill. Chronograph/Stopwatch functions: Large central seconds hand counter. 30 minute counter sub-dial located at the 3 o'clock position. 12 hour counter sub-dial located at the 6 o'clock position. Small continuous running second hand sub-dial located at the 9 o'clock position. Omega Caliber 1861, rhodium plated, beats at 21,600 vph, contains 18 Jewels & has an approximate power reserve of 48 hours. THIS WATCH IS PROVIDED WITH: A special commemorative presentation box. An additional black fabric "NATO" style strap with a stainless steel buckle & strap loops. An additional black fabric "VELCRO" strap - a re-edition of the strap worn by Apollo astronauts wore in space, even bearing the NASA part number in white. Tool & instructions to change straps/bracelet. Omega Speedmaster branded loupe. A 6cm paper-weight steel plate featuring a classic Speedmaster case back design with the iconic seahorse emblem & the case back opening notches.