Omega Constellation GLOBEMASTER CO‑AXIAL MASTER CHRONOMETER 39 MM

The movement is unaffected by exposure to strong magnetic fields, even those greater than 1.5 tesla (15,000 gauss).

Label given to a watch which has undergone precision tests and received a certificate from an official body (COSC).

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.

Guaranteeing the Swiss industry’s highest standard of precision, performance and magnetic-resistance, as set by the Swiss Federal Institute of Metrology (METAS).

Allows the hour hand to be easily adjusted to different time zones without stopping the watch.

A transparent caseback - frequently made of sapphire - makes it possible to see the movement inside the watch.