OMEGA-SEAMASTER AQUA TERRA 150M CO‑AXIAL MASTER CHRONOMETER SMALL SECONDS 38 MM 220.23.38.20.60.001

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.

The hardest, most luminous precious stone whose value is calculated according to the 4C criteria: Cut – Carat – Clarity – Color.

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

A hand on a sub-dial which tracks seconds typically it completes a full rotation in one minute.

A transparent case back – frequently made of sapphire – makes it possible to see the movement inside the watch.