Honouring OMEGA’s legacy of space exploration, this Speedmaster Grey Side of the Moon features a 44.25 mm case in polished-brushed grey ceramic with a plasma treatment. The brushed bezel is also made from grey ceramic and features a laser-engraved tachymeter scale that is filled with white Super-LumiNova.

Beneath the front sapphire crystal, OMEGA’s connection to the moon is celebrated via the specially decorated movement, which is laser-ablated on the main plate and bridges to represent the moon’s surface. The near side can be seen on the skeletonized grey anodised aluminium dial, while the far side can be seen through the caseback.

The design includes a small-seconds display at 9H, a 30-minute recorder at 3H, and a 12-hour recorder at 6H. The Moonwatch style hands and bevelled indexes are all greyed and filled with white Super-LumiNova (green emission).

The specially decorated movement is the OMEGA Co-Axial Master Chronometer Calibre 3869, while the engravings on the caseback include the quote, THE MOON IS ESSENTIALLY GREY, which is attributed to Command Module Pilot, Jim Lovell, during the Apollo 8 mission.

The watch is worn on a grey nylon fabric strap with black rubber lining, a ceramic foldover clasp and ceramised titanium frame-spring folders.

Features
Anti-magnetic: The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).
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.
Chronometer: Label given to a watch which has been successfully tested by an accredited and independent laboratory in order to receive a certificate compliant with the chronometer ISO 3159 standard.
Master Chronometer Certified: Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).
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: 310.92.44.50.06.001
Between lugs: 21 mm
Lug‑to‑lug: 50.00 mm
Thickness: 12.97 mm
Case diameter: 44.25 mm
Case: Grey ceramic
Dial colour: Grey
Crystal: Scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance: 5 bar (50 metres / 165 feet)
Total product weight (approx.): 94 g
Calibre: OMEGA 3869 Grey Edition
Movement type: Manual‑winding
Power reserve: 50 hours

Strap
Strap color: Grey
Strap type: Coated nylon fabric strap
Strap surface: Reinforced fabric
Strap underside: Rubber
Buckle type: Foldover clasp
Buckle material: Ceramic