What is ATM when referring to water-resistance?
Mntrk watches are marked on their casebacks with their water-resistance. The resistance is to a certain depth or unit of pressure, measured by a number of ATMs, or atmospheres (1 ATM = 33 feet or 10 meters). Due to this technical specialty, it is important to send it to our authorized technical center for repairs and/or maintenance, as they will test that the seal has been restored upon resealing the caseback and that the watch remains suitable for submersion.