Breitling Navitimer Cosmonaute
mod. 809

Case Diameter: 41 mm
Case Height: 12 mm
Lug Width: 22 mm
Movement: 24 HR Venus 178 manual wind
chronograph. 17 jewels,18,000 bph, 44 hour
power reserve.
Case material: Heavy gold plating over
unknown base.
Crown: Non-screw down
Bezel: Bi-directional, non-indexed flight
computer (slide rule)
Water resistance: not rated
Vintage: Mid 1960s

The 24-hour version of the Navitimer was
developed at the request of NASA Astronaut
Scott Carpenter, who wore a modified
Navitimer with a 24 hour movement and dial
on his Mercury flight in 1962. Carpenter later
returned his watch to Breitling for servicing,
after having been submerged in seawater
during space capsule recovery. Breitling
replaced the watch with a new "Cosmonaute"
model. The whereabouts of the original which
flew into space is unknown.