Owning a waterproof watch offers convenience for both daily use and adventurous activities. It gives you peace of mind, whether you’re caught in the rain or timing your swim laps, without worrying about water damage.

However, terms like ‘waterproof’ and ‘water resistant’ can be confusing. What’s the difference, and how do you know what your watch is truly capable of? This guide will explain the key distinctions so you’ll know exactly what your watch can and can’t handle.

What’s the Difference Between Waterproof and Water Resistant?

Although often used interchangeably, ‘waterproof’ and ‘water resistant’ are not the same.

• Water Resistant: Designed to withstand some water exposure, but not entirely impermeable.
• Waterproof: Constructed to prevent water from entering the watch under specified conditions.

Water resistance is typically expressed in meters, ranging from 30m to 1000m, with most everyday watches falling between 30m and 300m. However, these numbers don’t indicate diving depth directly. Instead, they refer to the pressure the watch can handle under controlled conditions. The pressure tests are carried out on the day of manufacturer in lab conditions - 30 meters of water pressure in still water exerts 3ATM of pressure on the watch but swimming (even on the surface) will exert many times that pressure as the watch is thrust through the water as we swim. For example, a watch rated for 30m is suitable for light splashes, while a 50m rating allows limited water exposure. At 100m, a watch is fine for surface swimming, and at 200m, it’s safe for activities like snorkelling.  

This is why most watches are labeled as water resistant rather than waterproof, as variables like temperature changes and pressure fluctuations can compromise their integrity.

Truly Waterproof Watches

True waterproof watches exist and are designed to handle full submersion at considerable depths, such as 1000m-rated models for deep-sea diving. However, maintaining these watches is crucial, as factors like temperature changes can weaken the seals over time. Regular maintenance helps preserve their water-resistant properties.

How to Identify If Your Watch is Waterproof

For standard use, a watch rated at 100m is suitable for swimming, while only models marked at 1000m are built for deep-diving. Avoid exposing watches to extreme temperature shifts, like hot showers, which can cause seals to fail and allow water to seep in.

Construction of Waterproof Watches

Waterproof watches incorporate enhanced materials and construction methods:

• Sealants: Additional sealant is applied within the case for extra protection.
• Gaskets: These are seals, often made from rubber, Teflon, or nylon, that create watertight barriers at various connection points, like around the case and pushers.
• Case Design: Typically made from stainless steel, titanium, or solid gold, waterproof watch cases are thicker and use screw-in designs to withstand greater pressures.

Testing Methods

Waterproof watches undergo strict testing procedures to ensure their performance:

• Dry Test: Assesses whether any air leaks into the watch under pressure.
• Wet Test: Submerges the watch fully in water and then increases pressure to check for leaks.

Tips for Maintaining Your Waterproof Watch

Even the best waterproof watches need regular maintenance. Follow these guidelines to extend their lifespan:

• Avoid rapid temperature shifts (e.g., saunas or hot showers).
• Rinse off saltwater exposure immediately to prevent corrosion.
• Keep watches away from harsh chemicals like chlorine and certain perfumes.
• Don’t operate pushers while submerged, as this can breach the seal.

Choosing the Right Level of Water Resistance

You’re more likely to encounter water-resistant watches rather than fully waterproof ones. This guide will help you select a suitable watch based on your specific needs, ensuring you have the right level of protection for your lifestyle. Proper care and occasional servicing will keep your watch performing as intended for years to come.

Warranty exclusions

Our warranty (and Manufacturers' warranty) do not cover any damage resulting from water/moisture damage. As mentioned above, it is not recommended to expose watches under 100m / 10ATM water resistance to any form of bathing, showering or swimming and watches of 200m / 20ATM to diving as these activities can easily exceed the ATM (pressure) limitations. Water resistance ratings are measured in pressure vessels under laboratory conditions - when swimming or diving into water, the pressure exerted on the watch greatly increases far beyond the 'lab' rating.