Speedmaster Professional Moonwatch

“Speedmaster Calibre 321 (Ed White)”

The 'Ed White' of 2020 revives the legendary column-wheel caliber 321 — the same movement family worn on the first American spacewalk — manual-winding at 18,000 vph with a 44-hour reserve. It is one of the smaller cases in the family at 39.7 mm of stainless steel, with a black matte dial, aluminum…

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