Waterproofing is a critical feature for many watch owners, especially those who frequently engage in water-related activities or simply want to protect their investment from everyday water exposure. Understanding the levels of waterproofing, how it is measured, and how to maintain it can help ensure your watch stays protected. Here’s what you need to know about waterproofing in watches.
1. Water Resistance Ratings Explained
Water resistance in watches is not about being completely waterproof but about resisting the entry of water up to certain pressures. Here are common ratings you might see:
- 30 meters (3 ATM/Bar): Suitable for everyday use. Splash/rain resistant but not suitable for showering, bathing, swimming, snorkeling, water related work, and fishing.
- 50 meters (5 ATM/Bar): Suitable for swimming, white water rafting, non-snorkeling water related work, and fishing.
- 100 meters (10 ATM/Bar): Suitable for recreational surfing, swimming, snorkeling, sailing, and water sports.
- 200 meters (20 ATM/Bar): Suitable for professional marine activity, serious surface water sports and skin diving.
- 300+ meters: These are typically reserved for dive watches that comply with ISO standards for diving.
2. How Water Resistance is Achieved
Watch manufacturers use various methods to achieve water resistance:
- Seals and Gaskets: Most watches use rubber, nylon, or Teflon gaskets at all points of opening (case back, crown, and crystal) to seal the watch.
- Screw-down Crowns and Case Backs: These features help improve water resistance by tightening the areas where water might penetrate.
- Thick Crystals: Thicker and more robust crystals are less likely to warp under pressure, which helps maintain the seal.
3. Misconceptions about Water Resistance
- ‘Waterproof’ vs. ‘Water Resistant’: No watch is truly “waterproof”. International standards and regulations prefer the term “water resistant”, which accurately describes a watch’s ability to resist water entry to certain extents.
- Static vs. Dynamic Water Pressure: A watch tested for 50 meters in static conditions (not moving) might not handle the same level under dynamic conditions (during movements like swimming strokes).
4. Maintenance Tips for Water Resistance
- Regular Testing: It’s advised to have your watch’s water resistance checked annually as gaskets and seals may deteriorate over time due to wear, temperature changes, and exposure to chemicals.
- Rinsing After Exposure to Salt or Chlorinated Water: Always rinse your watch with fresh water after exposure to saline or chlorinated water to prevent corrosion of its metal components.
- Service and Repair: Have your watch serviced by a professional if it shows signs of moisture inside the case, as this could indicate a seal failure.
5. Longevity and Care
Taking care of your water-resistant watch is not just about handling it with care, but also about understanding and respecting the limitations of its design:
- Avoid Hot Showers: The combination of hot water and steam can cause the seals to expand and contract, potentially allowing water to seep inside.
- Chemicals and Cosmetics: Avoid direct contact with chemicals, solvents, and cosmetics as they can degrade the gaskets that keep your watch water-resistant.
Conclusion
Understanding the intricacies of watch waterproofing is essential for anyone who wants to maintain the longevity and functionality of their watch. Regular maintenance and mindful usage based on the watch’s specific water resistance rating will help keep your watch in optimal condition and prevent water damage. Whether you are a casual wearer or a diving enthusiast, knowing these details ensures that you get the most out of your water-resistant watch.
