Some years ago I had a Ebel Classic, which were indeed advertised as waterproof Sport models. For diving I did not want to use, but on the beach while bathing they should already be waterproof. In a Caribbean vacation I made some jet skiing and what happens? In the evening the glass was fogged up from the inside and completely rusted face and hands in the morning. So there is no diving, penetrated grad times of little swimming and jet ski riding seawater and has destroyed the clock more or less. On the note from jeweler that you can not take such an expensive clock with the water, even if it is waterproof (of because), I countered that my Rolex watches that cost many times, have never caused problems in this direction. The repair should cost 60% of the price, although it was by 1.5 degrees years old. Nix with warranty because it was mishandled - really crass joke. Ebel died for me ever since.