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Speedmaster Calibre 321 39.7 mm
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Speedmaster Calibre 321 39.7 mm
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Caractéristiques
Features
Chronograph : The chronograph function is a mechanism for measuring time intervals. A chronograph watch can therefore be used to time events while displaying the time like any traditional watch.
Small seconds : A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.
Tachymeter : A tachymeter watch has a function for measuring speed. It is a chronograph with a graduated dial on which speed can be read in kilometres per hour based on a 1000 metre distance.
Transparent caseback : A transparent caseback – frequently made of sapphire – makes it possible to see the movement inside the watch.
Technical Data
Reference : 311.30.40.30.01.001
Between lugs : 19 mm
Lug‑to‑lug : 48.0 mm
Thickness : 13.7 mm
Case diameter : 39.7 mm
Case : Steel
Dial colour : Black
Crystal : Scratch‑resistant sapphire crystal with anti‑reflective treatment inside
Water resistance : 5 bar (50 metres / 165 feet)
Total product weight (approx.) : 128 g
Calibre : Omega 321
Movement Type : Manual‑winding
Power reserve : 55 hours
Bracelet
Material : Steel
Type of Clasp : Foldover clasp