Why does the Omega Speedmaster Professional maintain its official status for spacewalks (EVA)?

Answer

It was the only timepiece to pass NASA's rigorous testing protocols in the late 1960s.

The Omega Speedmaster Professional earned its official status because it successfully passed NASA's stringent qualification tests during the 1960s, making it the mandated equipment for EVAs.

Why does the Omega Speedmaster Professional maintain its official status for spacewalks (EVA)?

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