This Speedmaster Racing Master Chronometer model features a 44.25 mm stainless steel case and bracelet with a black ceramic bezel ring that includes the famous tachymeter scale filled with white enamel. On the white dial, there is a distinctive racing style minute-track which gives the watch its name. There are also two subdials with blackened applied rings as well as a 6 o’clock date window that blends with the colour of the dial. The hour and minute hands and arrowhead indexes are blackened with white Super-LumiNova. Orange touches include the "Speedmaster" name and the tip of the central seconds hand. The watch is driven by the OMEGA Co-Axial Master Chronometer 9900, certified by METAS at the industry’s highest standard. Steel on Steel 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 (COSC).
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 (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.
Time zone function Allows the hour hand to be easily adjusted to different time zones without stopping the watch.
Transparent case back A transparent case back - frequently made of sapphire - makes it possible to see the movement inside the watch.
Total product weight (approx.): 185 g
Between lugs: 21mm
Lugtolug: 50.0mm
Thickness: 14.9mm
Case: Steel
Case diameter: 44.25mm
Water resistance: 5 bar (50metres / 167 feet)
Dial color: White
Crystal: Domed scratchresistant sapphire crystal with antireflective treatment on both sides
Material: Steel
Type of Clasp: Foldover clasp with comfort setting