If you are in Capri, to replace the battery in your watch trust the staff of Capri Kronos.
In many wristwatches appear written on the back of the case or the terms Water Resistant Waterproof whose meaning is water resistant or waterproof. The watches are tested to be water-resistant to 1 meter deep for 30 minutes and 90 seconds at 20 meters.
Check the instruction manual of your watch the real meaning 50/100/300 meters, you will be surprised to discover that normally has nothing to do with the actual depth of immersion in water, this is to the concepts mentioned above.
The useful life of a battery is on average 12 to 18 months. Its longevity depends on the type of clock, by its size and the amount of energy required for the different functions.