The replica Omega Speedmaster was introduced in 1957, and after a few initial adjustments to its appearance in the late 1950s and early 1960s the watch as we know it today has remained almost unchanged. Nowadays the hand-wound Speedmaster Professional is a classic and one of the iconic watches that has remained so close to its original ancestor.
Watch Icons - Omega Speedmaster
It was and still is the official watch for extra-vehicular activities performed by NASA astronauts—it was tested thoroughly in 1965 for the Apollo space programme and recertified for the Space Shuttle programme in 1978. If it is good enough for NASA, it is probably good enough for you.

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