The first self-winding movement chronograph worn in outer space, during the 1983 Spacelab mission. It was specially designed to stand up to the most extreme conditions. The initials of the first European space mission are engraved on the back of the case. The self-winding movement makes manual winding unnecessary. Since there is no weight in space the oscillating weight moves much more easily than on earth, with only friction to slow its movement.
|Diameter||Thickness||Water Resistance||Lug Width||Lug-to-Lug||Crown||Movement||Power Reserve|
|43 mm||15.5 mm||100 m||20 mm||?||screw down||Lemania 5100||40 hours|