History OMEGA watch, Speedmaster professional, "MOONWATCH "The first watch worn on the moon flight-qualified by NASA for manned space missions", personal watch worn by Jean-Loup CHRETIEN during the second flight in the space station on Mir in 1988. The house OMEGA confirmed to us: This watch was sent to Moscow on 9.12.1976 and it is indeed a ST 145.022 with a caliber 861. serial number: 39185737. Steel bracelet chronograph. Round case, screwed back. Black dial with logo, three counters for hours, minutes and seconds, 1/5th of a second graduation. Mechanical movement. Steel bracelet. This "Speedmaster Professional" watch is an emblematic watch of the space conquest. It is traditionally given to astronauts who leave for missions. (A certificate certifying that this watch is the property of the cosmonaut Jean-Loup Chrétien will be given to the purchaser) On June 1, 1965, the Omega Speedmaster Professional "Moonwatch" received the official NASA certificate for use on manned space missions, the result of tests organized by NASA engineer Ragan and Slayton, the head of the Astronaut Office Division, among 10 watch manufacturers. To be "flight qualified by NASA for all manned space missions," a wristwatch had to pass all of the following tests multiple times without failure of any kind: High temperature - 48 hours at 160°F (71°C) followed by 30 minutes at 200°F (93°C). For high temperature testing, atmospheric pressure must be 5.5 psi (0.35 atm) and relative humidity must not exceed 15%. Low Temperature - Four hours at 0°F (-18°C) Temperature pressure chamber - maximum pressure of 1.47 x 10exp-5 psi (10exp-6 atm) with an elevated temperature of 160°F (71°C). The temperature should then be lowered to 0°F (-18°C) in 45 minutes and raised to 160°F in 45 minutes. Fifteen more such cycles must be completed. Relative humidity - A total of 240 hours at temperatures ranging from 68°F to 160°F (20°C to 71°C, respectively) in a relative humidity of at least 95%. The steam used must have a pH between 6.5 and 7.5. Pure Oxygen Atmosphere - The test item shall be placed in a 100% oxygen atmosphere at a pressure of 5.5 psi (0.35 atm) for 48 hours. Performance outside of specification tolerances, visible burns, creation of toxic gases, foul odors, or deterioration of seals or lubricants will constitute failure. Ambient temperature must be maintained at 160°F (71°C). Shock - Six shocks of 40 g each, in six different directions, each shock lasting 11 milliseconds. Acceleration - The test item shall be accelerated linearly from 1 g to 7.25 g in 333 seconds along an axis parallel to the longitudinal axis of the spacecraft. Decompression - 90 minutes in a vacuum of 1.47 x 10E-5 psi (10 E-6 atm) at a temperature of 160° F (71° C) and 30 minutes at 200° F (93° C). High Pressure - The test element shall be subjected to a pressure of 23.5 psi (1.6 atm) for a minimum period of one hour. Vibration - Three 30-minute cycles (lateral, horizontal, vertical, frequency ranging from 5 to 2000 cps and back to 5 cps in 15 minutes. The average acceleration per pulse must be at least 8.8 g. Acoustic noise: 130 dB over a frequency range of 40 to 10,000 HZ, for a duration of 30 minutes.