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Anti Reflection

A film created by steaming the crystal to eliminate light reflection and to improve legibility.

Atmosphere (ATM)

Unit of pressure used in watch making to indicate water-resistance.

Automatic

Automatic or automatic watches usually refers to those mechanical watches which wind themselves by means of a swinging mass or rotor (which rotates by arm movement) which through a series of gears, winds the mainspring which in turn powers the watch.

Automatic Winding

A watch that winds on its own. - A watch whose mainspring is wound by the movements or accelerations of the wearer's arm. On the basis of the principle of terrestrial attraction, a rotor turns and transmits its energy to the spring by means of an appropriate mechanism. The system was invented in Switzerland by Abraham-Louis Perrelet in the 18th century.