Why might the Speedmaster be used across multinational missions on the ISS despite astronauts being able to bring personal watches?

Answer

Standardization for mission compatibility.

The continued selection of the Speedmaster across multinational missions on the ISS is often attributed to the need for standardization to ensure compatibility within the mission structure.

Why might the Speedmaster be used across multinational missions on the ISS despite astronauts being able to bring personal watches?

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