Here are some explanations of common water resistance standards:
- 30 Metres / 3 ATM: Splash proof and waterproof in small amounts of water.
- 50 Metres / 5 ATM: Can be submerged in water. Suitable for swimming, but not guaranteed to be resistant to jumping into the pool.
- 100 Metres / 10 ATM: Suitable for swimming and shallow diving.
- 200 Metres / 20 ATM: Suitable for diving (not deep sea).
For more information on water resistancy please click here.