Dear customer, 3 ATM protection/water resistance means that wristwatches are suitable for everyday use, handwashing, splash/rain resistant. Not suitable for showering, bathing, swimming, snorkelling, water related work and fishing. Particularly salt (sea)water and chemicals can be very harmful for watches. If you get it wet, immediately dry it with a cloth. IMPORTANT! The crown should be always pushed in completely to prevent possible water penetration.