For well over half a century, the OMEGA Speedmaster has witnessed events that have tested the limits of physical endurance and human courage, including the first manned moon landing in July 1969 and every lunar mission since that time. The OMEGA Speedmaster Professional Chronograph has a unique place in the history of space exploration as the only piece of equipment used in all of NASA's piloted space missions from Gemini to the current International Space Station program. When Buzz Aldrin stepped on the lunar surface in 1969, he was wearing a Speedmaster Professional, the chronograph that has been known as the Moonwatch ever since.