Omega Speedmaster Moonwatch Professional 42mm steel on steel

The OMEGA Speedmaster is one of OMEGA’s most iconic timepieces. Having been a part of all six lunar missions, the legendary Speedmaster is an impressive representation of the brand’s adventurous pioneering spirit.
This OMEGA Speedmaster Professional “Moonwatch” features a black dial covered by a scratch-resistant sapphire crystal and graced by a small seconds sub-dial, 30-minute recorder and 12-hour recorder along with a central chronograph hand. The black bezel, with its tachymetric scale, is mounted on a 42 mm stainless steel case and presented on a matching bracelet.
At the heart of this chronograph is OMEGA’s mechanical calibre 1863, a descendent of the legendary manual-winding movement worn on the Moon, visible through the transparent caseback. This timepiece is offered with a special Moonwatch presentation box which contains a “NATO” strap, a strap for astronauts, a tool to change the bracelet and a book highlighting Speedmaster’s adventures.
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
311.30.42.30.01.006
Between lugs 20mm
Lug-to-lug 48.2mm
Thickness 13.5mm
Case diameter 42mm
Case
Steel
Dial colour Black
Crystal
Domed, scratch-resistant sapphire crystal with anti-reflective treatment inside
Water resistance
5 bar (50metres / 165 feet)
Watch size Gents
Total product weight (approx.)
161 g
Calibre: Replica Omega 1863
Movement Type Manual-winding
Power reserve 48 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.
Bracelet
Material Steel