mikesoot asked in SportsSwimming & Diving · 1 decade ago

What does "5ATM Water Resistant" on the back of a watch mean?

I have a Pronto brand watch with 5ATM Water Resistant on the back so would like to know the water resistant depth of the watch

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  • 1 decade ago
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    Water Resistance

    Most Skagen and Pronto Watches are rated at 3ATM, 5ATM or 10ATM for water resistance. What does this rating mean?

    ATM or “atmospheres” is the amount of pressure a watch can withstand before leaking. A 3ATM watch will withstand pressures equivalent to about 30 meters, or 100ft under water. It is important to note that this is a measure of pressure NOT depth. For example, the pressure from the water coming from the shower hitting the seals of the watch is far greater than 3 atmospheres.

    The following are “real world” examples of the water resistance of each rating:

    3ATM - Water resistant to 30 meters (100 feet). Will withstand splashes of water or rain but should not be worn while swimming or diving.

    5ATM - Water tested to 50 meters (165 feet). Suitable for showering or swimming in shallow water.

    10ATM - Water tested to 100 meters (330 feet). Suitable for swimming and snorkeling.

    Not Water Resistant

    You will know that your watch is NOT water resistant if there are no markings on the watch.

  • Anonymous
    5 years ago

    This Site Might Help You.

    RE:

    What does "5ATM Water Resistant" on the back of a watch mean?

    I have a Pronto brand watch with 5ATM Water Resistant on the back so would like to know the water resistant depth of the watch

    Source(s): quot 5atm water resistant quot watch mean: https://shortly.im/B8Ewq
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  • ?
    Lv 4
    3 years ago

    What Does Resistant Mean

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  • 3 years ago

    Waterproof Watches

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  • 4 years ago

    Professional watch repairer advices any watch marked in ATM is ok for hand washing and the odd splash, don t even risk in the shower. Want a watch that you can swim in forget it if it s measured in ATM s

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  • 1 decade ago

    A water resistance rating of 5ATM means the watch is resistant to water at an equivalent of 5 times the ordinary atmospheric pressure.

    That translates into a depth of 50 meters.

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  • 4 years ago

    It means that you can take that "thing" about 40 meters (133 feet) under water.

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  • 3 years ago

    The Water resistant on a wristwatch indicating its ability to withstand exposure to water.

    - Wet strength, a measure of the strength of paper when wet

    - Waterproofing, making objects or structures resist the ingress of water under specified conditions

    - Fluid resistance, drag in water

    - Lotus effect (water-resistance in plant leaves)

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  • 1 decade ago

    One atmosphere of pressure equals 14.7 pounds per square inch of pressure.

    5 atmospheres of pressure would be equivalent to 133 feet of depth underwater (maximum depth for recreational scuba diving) as each 33 feet of sea water equals one atmosphere of pressure (plus the natural atmosphere) equals 5 atmospheres.

    The water tight seals on the watch are not guaranteed past that depth. Of course, if you go past that depth, your watch warranty is the least of your problems.

  • Nice reply, said about such type of question

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