BAR is a unit of pressure used to indicate a watch’s level of water resistance.
- 1 BAR = 10 meters (33 feet) of water depth in laboratory testing.
- This doesn’t mean you can dive to that exact depth. Instead, it reflects the watch’s ability to withstand pressure under controlled conditions.
Because real-life use involves movement, temperature changes, and water pressure fluctuations, the actual safe use is different from the raw number.
Common BAR Ratings & What They Mean
- 3 BAR (30m / 100ft)
Resistant to splashes, rain, and hand washing.
❌ Not suitable for swimming or bathing. - 5 BAR (50m / 165ft)
Safe for showering or brief swimming in shallow water.
❌ Not for snorkeling or diving. - 10 BAR (100m / 330ft)
Suitable for swimming, snorkeling, and water sports.
❌ Not designed for deep diving. - 20 BAR (200m / 660ft)
Built for serious water activities, professional marine use, and diving. - 30+ BAR (300m and above)
Professional diver’s watches, engineered for extreme underwater pressure.
⚠️ Important Notes
- Hot water, steam, and saunas can damage seals — even if your watch is water-resistant.
- Water resistance can weaken over time; it’s recommended to have seals checked every 1–2 years.
- Always ensure the crown is fully pushed in or screwed down before exposing your watch to water.
✅ Example:
If a watch says 5 BAR, it means it can handle daily splashes and even light swimming, but it’s not suitable for diving or prolonged underwater use.