Moonwatch Chronograph 39.7 mm Calibre 321
Steel on steel
Available in stores from early 2020.
Having been a part of all six lunar missions, the legendary OMEGA Speedmaster is one of the world’s most iconic timepieces. This model has reprised the famous Calibre 321, which was an important part of the Speedmaster’s original space history.
The 39.70 mm case is in stainless steel and is inspired by the same 3rd generation style that astronaut Ed White wore during America’s first spacewalk in 1965. There is also a bezel ring in polished black ceramic [ZrO2] with the tachymeter scale in white enamel.
The black step dial features familiar Moonwatch hands, a vintage OMEGA logo, as well as a small seconds sub-dial, 30-minute recorder and 12-hour recorder along with a central chronograph hand. Through the sapphire-crystal caseback, you can see the Calibre 321 inside.
All OMEGA watches are delivered with a 5-year warranty that covers the repair of any material or manufacturing defects. Please refer to the operating instructions for specific information about the warranty conditions and restrictions.
Complicated watch with a function for measuring short time periods in addition to its function for permanently displaying hours, minutes and seconds.
Small seconds Small seconds
A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.
A tachymeter is an instrument for measuring speed. It is a chronograph with a graduated dial on which speed can be read off in kilometres per hour based on 1000 metres distance.
Transparent case back Transparent case backA transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
- Between lugs: 19 mm
- Bracelet: steel
- Case: Steel
- Case diameter: 39.7 mm
- Dial colour: Black
- Crystal: Scratch‑resistant sapphire crystal with anti‑reflective treatment inside
- Water resistance: 5 bar (50 metres / 167 feet)
A new look for your watch
Your watch and strap should go together perfectly, but that doesn't mean you can't experiment with different combinations. Why not mix things up and see what happens? You may discover a look that's as individual as you are.
CALIBRE OMEGA 321
Famous manual-winding chronograph movement with column wheel mechanism, Breguet balance-spring and 18K SednaTM gold PVD coated finish. The calibre that was worn on the Moon.
- 55 hours
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