Most regular watches actually do work in Space but since the beginning of spaceflight astronauts have usually used the Speedmaster watch. ... In addition to the Speedmaster watch, astronauts can also use a master clock in the spacecraft to set their working hours, meals, and sleep times.

What would happen to a watch in space?

Having a watch in space is remarkable by itself. However, since Omega launched its manual wound Speedmaster watch to the moon together with some astronauts back in 1969, many have wondered whether automatic watches could work as well. Automatic watches will work fine in space.

What watches are worn in space?

If you want the absolute classic, well, there's only ever been one watch that's been approved by NASA for outer space travel (though astronauts have worn many different, unapproved watches, too). That's the Omega Speedmaster.