
Interesting fact: Neil Armstrong was not the first man to wear a Speedmaster on the surface of the moon. His Speedy was left in the control module after an electronic timer on the module failed. Buzz Aldrin was the first man to wear the Omega Speedmaster on the moon.
"It was optional to wear while we were walking on the surface of the moon ... few things are less necessary when walking around on the moon than knowing what time it is in Houston, Texas. Nonetheless, being a watch guy, I decided to strap the Speedmaster onto my right wrist around the outside of my bulky spacesuit."