When you buy a watch, you expect it to do more than tell the time. If you’re into outdoor activities such as water sports or outdoor adventures, a watch that won’t stop working at the first sign of water is a must. But what’s the difference between waterproof and water-resistant? Do the ‘bar’ ratings mean anything, or is it simply advertising hyperbole? And are waterproof watches really worth paying extra for?
In this article, we’re going to take a deep dive into water-resistant watches for men and examine waterproof watches for women in more detail. We’ll answer questions such as why it matters, what 5atm water resistance is, and how to choose the right watch for your lifestyle.
We’ll also take a look at the dos and don’ts of caring for a waterproof watch and run through a few of the most frequently asked questions about buying these specialist watches. This is your ultimate guide to waterproof watches for men and women.
Why is water so bad for watches?
Water and watches don’t mix. They’re pretty much mortal enemies. In an average non-waterproof watch, the closest your chronograph gets to water is a drop or two on the face glass. Any more than that and you’re looking at buying a new watch. Why? If water manages to get inside the case, it can cause mechanical components to rust and electronic elements (such as those found in smartwatches and digital timepieces) to short out.
Either way, it spells disaster for your watch. You’ll know if your watch has suffered water ingress as it’ll usually be apparent on the inside of the face glass, where condensation causes ‘fogging’. If it’s awful, you might even see droplets inside the watch.
What’s the difference between waterproof and water-resistant?
To combat this watery weakness, years of research and development have gone into creating watches that can withstand everything from a light rain shower to being submerged in the ocean’s depths. However, there’s a significant distinction between water resistance and waterproofness when it comes to timepieces.
Water-resistant watches for men and women indicate that the model (and not necessarily the watch itself) has undergone limited batch testing by the manufacturer. During that testing, a sample undergoes a pressure test in still water for a limited amount of time (usually measured in minutes). This means that not all of the watches are tested, only a representative sample.
So if your watch says ‘water resistant’, that is no guarantee that it has undergone any testing whatsoever. It means that some watches from that batch have been subjected to and have passed a very limited test. It has also not been tested in ‘real-world’ conditions, including the strap strength and shock resistance.
If a watch claims to be waterproof, it has to undergo considerably more rigorous testing than a water-resistant version. Theoretically (and we’ll explain why we use that term in a minute), a waterproof watch is fully sealed against any water ingress, typically due to a watertight gasket that sits between the body and the back of the watch. Other ingress points, such as around winding posts, are also sealed. This must be tested thoroughly, and a watch that passes is given a rating indicating it can withstand both water and pressure up to and including the depth specified by the rating.
However, we used the term ‘theoretically’ advisedly, because the term waterproof is not used as frequently now as it once was. This is because manufacturers know the unexpected can happen, and claiming that a watch is 100% waterproof is leaving them open to litigation from annoyed customers who find their very expensive watch is suddenly letting in water.
Today, the term ‘professional diver’s watch’ is more commonly used to refer to high-spec, waterproof watches designed for men and women. Confusingly, the term ‘water resistant’ is now almost universally used to indicate any watch that may be resistant to water damage.
Okay, so how do you know if it’s waterproof or not?
This leads us to the use of Bar and ATM ratings, which is a far more accurate way to determine whether a watch is suitable for occasional use in the shower or if it can withstand a deep dive in the Caribbean Ocean. So what is 5ATM water resistance, and what does 3 bar water resistance mean?
The different water resistance ratings for watches serve as a helpful guide to choosing the right type of watch for your lifestyle and activities. Whether you’re a yachtsman, diver, skier or hiker, or want a watch you can wear and forget even if you get caught in the rain, the different ratings give you the information you need to make an informed choice.
Manufacturers typically indicate a model’s water resistance rating using atmospheres (abbreviated as ATM), meters (m), or bars. You’ll find the back of the case is marked with a simple indication of the model’s water resistance, such as 30ATM or 50M.
Why buy a water-resistant watch?
We’ve all got caught out in the rain occasionally. If you love water sports, taking your watch off and leaving it ‘somewhere safe’ is always a worry. And if you dive, having an accurate watch is vital if you want to avoid running out of air by staying down too long. There are several reasons to buy waterproof watches for men and women. Not only does it mean your watch won’t stop working if you get caught in a downpour, but the more robust seals and tighter fits also stop other contaminants from getting inside the case and messing up the mechanism, such as dust and, if you’re out in the desert, sand.
Sports watches, specially designed for swimming and events like triathlons, are also essential timepieces if you’re competing. Waterproof smartwatches, meanwhile, allow you to keep an eye on your blood pressure and pulse during a muddy trail run. If you’re active, a waterproof or water-resistant watch is a must-have.
The best men’s water-resistant watches
Rolex Oyster Perpetual Submariner – This watch is, quite simply, a legend. First introduced in the 1950s, the Submariner is a true connoisseur’s watch, as practical as it is stunningly beautiful. Rated water-resistant up to 300 m, it’s tough, too. However, your bank balance may take a significant hit – prices typically start at around £10,000.
Baltic Aquascaphe Classic – Widely regarded as one of the best water-resistant watches for men, the Aquascaphe Classic is a sublimely elegant timepiece boasting a water resistance rating of 200M. The dial is easy to read, and the vintage charm makes it an absolute favourite whether you’re diving in the ocean or the holiday villa pool. It’ll cost you around £550.
Casio G-shock Frogman – A chunky, funky, retro digital watch with an excellent pedigree, the Frogman comes in at around £75-80 and is a great budget choice. Surprisingly functional, it also boasts a 200M rating, making it an excellent choice for an affordable holiday watch or general sports watch.
Seiko 5 sports – At around £280-300, the Seiko is a great mid-range choice. Elegant and perfectly at home on your wrist at a gala dinner as well as under the ocean waves, the Seiko is rated up to 100M, so it’s perfectly capable of going for a swim whenever you want.
The best women’s water-resistant watches
Rolex Lady Datejust – Precision engineering and sleek design features make Rolex watches stand out from the crowd. This sublime ladies’ watch is also water-resistant to 100M, making it a perfect choice for a leisurely swim off a yacht in the Bahamas or for everyday wear, even when the weather turns nasty. Expect to pay over £7,000 for this luxury addition to your timepiece collection.
Tissot PRX 35 – Sharp, sophisticated, and rated to 100M, the PRX 35 is quintessentially Tissot. Combining French design flair with exquisite Swiss timepiece craftsmanship, it’s an elegant watch that’s also tough enough for sports enthusiasts, particularly scuba divers and swimmers. Prices range from around £350 to £400.
Seiko 5 – A second outing for the Seiko 5, the ladies’ version is every bit as good as the gents, with a 100M rating and a lighter, slimline profile that makes it perfect for everyday wear as well as swimming and diving.
Sekonda Women’s Balearic – For around £40, you can purchase this simple yet surprisingly stylish watch, making it an excellent choice for a holiday timepiece. With a rating of 50M, it’s perfect for a dip in the pool or a spot of paddleboarding on a lazy afternoon.
How to look after your water-resistant watches
Once you’ve bought your watch, you need to take care of it. Water resistance only refers to one element of your watch, so it’s essential to keep it in good condition, from the strap or bracelet to the glass face.
FAQs
How much does a water-resistant watch cost?
Water-resistant watches for men cost anything from £5 to £5,000. It will depend entirely on how much you are willing to pay, the level of water resistance (as indicated by the ATM, meter, or bar rating), and the style. Waterproof watches for women cover the same price range, but may sometimes be slightly less expensive, as the bracelets or straps are slimmer.
How often should I clean my water-resistant watch?
You can give your water-resistant watch a quick rinse in clean, fresh water after every swimming session or dive. A thorough clean once a month will keep the watch in great condition. A full manufacturer’s or professional watchmaker’s service should be carried out every three to five years, or whenever the watch requires attention, such as a battery change.
What are the best watches for diving?
The best diving watches will have ISO 6425 certification, which ensures they meet the standards for diving. Also look for a rugged strap and a screw-down case back and crown, which will prevent water from entering the workings.
My battery has died. Can I replace it myself?
Honestly? We wouldn’t advise it. Unless you have the specific tools required to open the back without damaging the seal, the simple act of replacing the battery could render your watch useless. Most manufacturers offer a battery replacement service for free or at a nominal cost. It’s best to make use of such a service.
Insure your water-resistant watch with TH March
Since 1887, TH March has been the trusted provider for insurance, including specialist watch insurance. Whether you’ve got a Rolex or a Seiko, you can get the right level of cover that protects your watch against loss, damage or theft. You can find out more on our watch insurance page, or use our Get A Quote button for a free, no-obligation quote today.