The OMEGA watch was the first watch to be worn on the moon. It was worn by astronaut Edwin 'BUZZ' Aldrin during the Apollo 11 mission in 1969. The watch was a Speedmaster Professional, which was part of the OMEGA Speedmaster series. The watch was designed to be resistant to extreme temperatures and pressures, making it ideal for space exploration. The OMEGA watch has since become an iconic symbol of space exploration and is still used by astronauts today.