The Caliber 321-powered Speedmaster, of course, was strapped to the exterior of the astronauts’ spacesuits via the long Velcro strap designed for use in spacewalks. In fact, Bean can be seen sporting the Speedy on the big, oversized wrist of the space suit, photographed by Conrad, Jr. on the Moon. After Conrad, Jr.’s watch safely made it back onto Earth, NASA held onto the chronograph for a few years until eventually transferring it to the Smithsonian Air and Space museum in 1977.