Do you have a question for Certina? Here you will find our answers to the most frequently asked questions we receive. If you don't find the answer you are looking for, please send us your query using the contact form.

Functioning of the watch

  • How much is the power reserve for a self-winding mechanical Certina watch and how does it work?
  • Which specification must a watch meet to be given the ISO 6425 diver's watch certification?
  • How can I ensure that my Certina watch functions as it should?
  • What is a COSC-certified quartz chronometer?
  • What are the precision tolerances for Certina mechanical watches?
  • To what depth are Certina watches water-resistant?
  • What are the precision tolerances for Certina quartz watches?


  • How can I be sure I am buying a genuine Certina watch?
  • How to sort my waste?
  • Where can I get a Certina catalogue?

Maintenance services

  • What is the battery life? What does EOL mean?
  • How often does a watch need to be serviced?
  • What does the guarantee cover?
  • Where can I have my Certina watch serviced?
  • Why does Certina not deliver replacement parts directly to its customers?
  • Can my Certina watch be serviced – do you have the right replacement components?
  • How much does it cost to get my Certina watch serviced?
  • How to clean your watch in this period of Coronavirus?


  • Does the dial and hand of my watch contain radium or tritium?
  • Can I wear a Certina stainless steel watch if I am allergic to nickel?