Are standard crowns waterproof? 03 May 2024 13:48 Updated Standard crowns (not screwed on) are fitted with seals to prevent water ingress. They are therefore water-resistant, provided the crown is properly pressed in and shows no signs of damage. We recommend an annual water-resistance check. Related articles How water-resistant is my watch? Can I clean my watch in an ultrasonic device, which is intended for cleaning glasses and jewelry? Why is the Divers Sixty-Five listed as a diver’s watch, even thought the water resistance is only 10 bar (100 metres)? Can I use my watch as a compass? What do the crown positions mean?