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Speedmaster Calibre 321 42 mm
311.90.42.30.99.002
Presented on a polished and brushed bracelet with vintage OMEGA logo on the clasp. This platinum model houses the iconic OMEGA Calibre 321, a movement that has been reborn for today using original specifications. Wearers can view the calibre through the sapphire-crystal caseback of the 42 mm timepiece, which has been crafted from a special platinum alloy with the use of gold (Pt950Au20).
The design also includes a black ceramic bezel with a white enamel tachymeter scale. Most notable is the step dial in black onyx, which uses 18K white gold for the indexes, and most hands. The vintage OMEGA logo is in 18K white gold. The design is completed by three unique subdials formed from a lunar meteorite.
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Speedmaster Calibre 321 42 mm
311.90.42.30.99.002
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Features
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 : 311.90.42.30.99.002
Between lugs : 20 mm
Lug‑to‑lug : 47.60 mm
Thickness : 13.39 mm
Case diameter : 42 mm
Case : Platinum
Dial colour : Black
Crystal : Scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance : 5 bar (50 metres / 165 feet)
Total product weight (approx.) : 267 g
Calibre : Omega 321
Movement type : Manual‑winding
Power reserve : 55 hours
Bracelet
Material : Platinum
Type of Clasp : Foldover clasp

