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MUFF Diver Watches

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ATM Explained

All MUFF watches are made with mechanical and electronic parts that can be damaged by water and humidity In this case, the waterproofness of the watch can be defined as its resistance to water pressure. When you buy a watch, request information on its waterproofness (shown in the table above) to avoid future disappointment. Waterproofness is determined in a laboratory under perfect conditions, that is, at constant temperature with the watch immobile.

Is waterproofness valid for life?

The waterproofness rating is provided for a new watch with gaskets, crystal and case in perfect condition. Waterproofness is assured at the time the watch is made and tested before it leaves the factory, but isn´t guaranteed for the life of the watch. The duration of waterproofness can vary depending on the characteristics of the watch, the way it is used and the way it is taken care of. Normal ageing of the gaskets that ensure waterproofness is quickened by thermal shock and large swings in temperature when the watch moves from sunlight to cold water or to a humid environment.

What can I do to keep my watch in good condition?

Salt water, acidity from perspiration, perfumes and chemical products can attack the watch gaskets and reduce the duration of waterproofness. We recommend that you check the condition of your watch on a regular basis to ensure that all parts that contribute to waterproofness are in good condition: crown, push buttons, crystal and gaskets. Do not use the crown or push buttons when you are in the water. If the watch has a screw-in crown, always make sure that it is tight before going in the water.

How can I tell if my watch is no longer waterproof?

If you see any damage or abnormalities avoid contact with water. Humidity and water infiltration can lead to expensive repair bills. Note that water condensation under the crystal or on the dial means that the watch is no longer waterproof and needs to be repaired by a professional as soon as possible.

How often should I have my watch checked for waterproofness?

When the watch has been opened for servicing, make sure that all waterproofness checks have been done, especially if you use the watch in water or in a damp environment on a regular basis. We recommend that you have the waterproofness of your watch checked once a year and every time the watch is opened.

3ATM Washing hands - Washing a car. 5ATM Shower or bath - Swimming. 10ATM Sport diving - Water sports.