Before your timepiece has contact with water, always ensure that the crown of your watch is firmly pushed into place.
The winding crown and push-pieces for the chronograph function cannot be used under water. Your watch should be checked for water-resistance by a specialist watchmaker every 2 or 3 years.
Your watch should only ever be opened by a specialist watchmaker, even if it is just to change the battery. Only a specialist will provide quality water-resistance control and service.
Regular servicing of the movement (approximately every 5 years) will help to prolong the life span of your watch.
Never leave a used battery inside your watch; oxidization may damage the movement beyond repair.
Regular cleaning with a soft brush and soapy water will preserve your watch; especially after swimming, by helping to thoroughly neutralize the harmful effects of seawater and chlorine
Straps require particular care. Frequent contact with water can cause premature wear and tear.