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Ernest Jones Watch Buyer's Guide

Water Resistancy

Introduction to water resistant watches

Choosing a watch from Ernest Jones that is water resistant whether it's for sporting reasons or just because you love the brand, we want to make sure you have an understanding of water resistance measurements before you make the decision to purchase.

How water resistance works

Water resistance is the ability of a watch to withstand splashes of water. Water resistance ratings are listed in depths or pressure, usually metres which appear on the watch dial. This depth rating actually represents the results of a static pressure test, undertaken in laboratory conditions. Therefore, the number of metres shown does not mean that is the underwater depth the watch can go. A watch marked as water-resistant without a depth indication is designed for accidental splashes only. Take a look at the water resistance chart for specific information.

Care & maintaining a water resistant watch

The following tips will help you care and maintain your watch's water resistancy for as long as possible.

  • Batteries in a water resistant watch should be changed only by the manufacturer or approved service agent so that the seal can be checked and renewed if necessary. If this is not done, the watch can no longer be guaranteed water resistant.
  • Remember leather straps are more easily damaged when exposed to water frequently.
  • After swimming or diving in seawater, rinse your watch in fresh water afterwards and dry thoroughly, to prevent a build up of corrosive salt.
  • Although your watch is water resistant avoid wearing it in a hot shower or sauna as extreme heat can cause watch seals to expand and create openings allowing water droplets to get inside.

If you are looking for a performance divers watch then see the water resistance chart for more guidance. For a watch suitable for scuba diving, a design featuring a screw in crown keeps the watch water tight as the crown screws directly into the watch case.

Water resistance chart
water resistance chart
  water
resistant
50M
5 bar
100M
10 bar
150M
15 bar
200M
20 bar
1000M
100 bar
Other items can be used to measure water resistance:
A.T.M. (atmosphere) -
1 A.T.M. equals 10 metres
bar -
1 bar equals 10 metres
only watches marked "divers" on the dial should be used for diving; as they fully comply with international standards for divers' watches
accidental splashes yes yes yes yes yes yes
swimming no yes yes yes yes yes
swimming, snorkeling,
water sports
no no yes yes yes yes
scuba diving no no no no no* yes
professional deep
sea diving
no no no no no* yes

Rotary Dolphin Standard

Rotary watches feature a unique 'Dolphin Standard' across their entire range of watches. 'Dolphin Standard' means that the watches have been upgraded to an exclusive waterproof specification meaning they are suitable for swimming, showering, and various watersports not including scuba diving.

Summary

Now that you're familiar with different water resistancy levels, when shopping you can decide on which watch is right for you. Browse our brand list or read our watch fashions section for more inspiration.

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