Certina sport watches set the standard in water resistance. In water sports, a timepiece with a minimum water resistance of 10 bar (100 m) is recommended. All Certina sport watches are equipped with the ‘DS’ concept, and tested to a minimum pressure of 10 bar (equivalent to a depth of 100 m) in accordance with the relevant ISO standards.

It should also be understood that water resistance cannot be guaranteed for an indefinite length of time. It may become compromised by ageing of the seals or impacts to the crown or push-button. For this reason, we recommend that you have the timepiece checked for water resis-tance by an authorised Certina Service agent annually, and have any faulty components replaced. Do not attempt to open the timepiece yourself under any circumstances.