During the preparation of space missions, NASA realized that they had no watch, which was tested in space. Under normal circumstances, the space agency to solicit bids from manufacturers of watches, a process that takes time, so close to them after their selection process at the heart of Houston to find watches representitves consumption design for a series of tests own rigorous. For the purpose they need a lift part due to the inefficiency of automatic mechanical movement watch weightlessness. NASA officials came up with bits of time Bulova, Breitling, Rolex, Longines and Heuer and individually tested to corrosion, shock, pressure, acceleration, noise, vibration, vacuum, intense humidity. All except the Speedmaster has not passed the test and if the clock is now Omega Speedmaster "show official certification" for all NASA manned missions.