Omega Speedmaster was launched in 1957 and was originally intended as a sports and racing chronograph. Not only did it become the official timekeeper for the Olympic games, it was also the "first watch on the moon" and to date, still favored by NASA as the timepiece of choice for space flights. The huge collection is comprised of several series including the Moonwatch, Chronographs, Limited Editions, Broad Arrow, Day-Date and Date and is made up of steel, gold or titanium. The Omega Speedmaster measures 35.5mm to 44.25mm and is available for both men and women. The latter presents an option for diamonds and an MOP dial. Driven by manual or automatic chronograph movement, it offers a multitude of complications such as rattrapante, 24hrs GMT, and moonphase. With a power reserve of 44hrs to 60hrs, the Omega Speedmaster is undoubtedly the perfect timepiece for the modern man.