Speedmaster '57 38.6 mm

A 60th Anniversary tribute to one of three classic timepieces released in 1957, this Speedmaster limited to 3,557 pieces, is based on the original “Broad Arrow”, which was not only the first Speedmaster, it was also the first chronograph wristwatch in the world with its tachymeter scale on the bezel as opposed to printed on the dial. The 2017 model perfectly matches each feature of the original and stays true to the Speedmaster's iconic spirit.
In common with all three watches in the Trilogy, it is cased in brushed and polished stainless steel and features a black 'tropical' dial, with vintage indexes filled with Super-LumiNova.
The updated stainless steel bracelet features a retro-style OMEGA logo on the clasp. It is powered by OMEGA calibre 1861.

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.
Limited edition: A series of watches whose production run is determined in advance of production and limited to a set number.
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.

Technical Data
Reference: 311.10.39.30.01.001
Between lugs: 19 mm
Lug‑to‑lug: 48.0 mm
Case diameter: 38.6 mm
Case: Steel
Dial colour: Black
Crystal: Hesalite crystal with OMEGA logo in the centre
Water resistance: 6 bar (60 metres / 200 feet)
Total product weight (approx.): 151 g
Calibre: Omega 1861
Movement Type: Manual‑winding
Power reserve: 48 hours

Bracelet
Material: Steel
Type of Clasp: Foldover clasp with comfort setting