PVD stands for ‘Physical Vapor Deposition’. It is a modern technology in which condensation of atoms or molecules from a gas or vapor form thin, but very hard layers of coating (1 to 3 micrometers) when they are applied to a metal carrier, for example the watch case or other metal parts. This process takes place under vacuum.
PVD is often used within watchmaking by giving stainless steel or titanium a colored coating, usually yellow (gold), but other colors also occur. PVD coating has the advantage of being very scratch-resistant, resistant to corrosion and makes it possible to choose in many different colors.