Speedmaster Calibre 321 39.7 mm, steel on steel - 311.30.40.30.01.001 birkin 5 mmLug Distance: 19 mmThickness:
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Description
Speedmaster Calibre 321 39.7 mm, steel on steel 311.30.40.30.01.001 birkin 5 mmLug Distance: 19 mmThickness: 5 mmLug Distance: 19 mmThickness: 9 this watch delivers reliable performance with a 42 hour power reserve