This watch is also known as:
Omega Speedmaster was introduced in 1957 and was made famous as being the first watch to be worn on the moon in 1969 by Buzz Aldrin. It was also used in outer space by the Russian space agency.
The Omega Speedmaster was chosen by NASA after comparing several off-the-shelf chronographs. The tests that were done included extreme temperature tests, vacuum, humidity, corrosion, shock, vibration and noise tests.
Only three watches passed these tests and the Omega Speedmaster was awarded the prize after not suffering from discrepancies as the others had.
The Omega Speedmaster Legend Chronograph features a day dial, month dial, seconds, minutes, hour and a central chronograph hand.
The body of this watch is made of stainless steel and features ant-glare, scratch resistant sapphire crystal. The Speedmaster Legend is water resistant to 100m.