Omega Speedmaster Moonphase 44.25mm steel-yellow gold on leather strap

The Speedmaster is one of OMEGA’s most iconic timepieces, having been a part of all six lunar missions. Taking the spirit of exploration a step further, this new Moonphase features two infinitely small yet photo-realistic moons.
This 44.25 mm model features a grey sun-brushed dial, with diamond polished 18K yellow gold indexes and hands.At 6 o’clock is the accurate Moonphase indication, which features a metallic crystal disc microstructured to obtain a high resolution image of the moon.
The stainless steel-18K yellow gold case is complemented by a green ceramic bezel ring with Ceragold tachymeter scale and presented on a grey leather strap with a polished-brushed foldover clasp.
Powering the timepiece is the OMEGA Co-Axial Master Chronometer 9904, which has been officially certified by METAS.
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 undergone precision tests and received a certificate from an official body.
Date
The day of the month, displayed in a window on a watch dial at the 3 or 6 o’clock position, or within a subdial at 9 o’clock.
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.
Moonphase
A moonphase watch uses a function which tracks the phases of the moon. One lunar cycle is 29 days, 12 hours, 44 minutes and 2.8 seconds and includes four phases: new moon, first quarter, full moon, last quarter.
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
304.23.44.52.06.001
Between lugs 21mm
Lug-to-lug 50.0mm
Thickness 16.9mm
Case diameter 44.25mm
Case
Steel – yellow gold
Dial colour Grey
Crystal
Scratch-resistant sapphire crystal with anti-reflective treatment on both sides
Water resistance
10 bar (100metres / 330 feet)
Watch size Gents
Total product weight (approx.)
125 g
Calibre: Replica Omega 9904
Movement Type Self winding
Power reserve 60 hours
Case Measurements
1. Between lugs This measures the space where a strap or bracelet would be placed.
2. Lug-to-lug
This is the full length of the case, from the top lugs to the bottom lugs.
3. Case diameter This is the full width of the watch’s case, excluding the crown and pushers.
4. Thickness When viewed from the side, this measures from the base of the watch to the surface of the glass.
Strap
Strap color Grey
Strap type Leather strap
Strap surface Alligator leather
Strap underside Non-grained calf leather
Buckle type Foldover clasp
Buckle material Stainless steel