The power of three

This is our Triplock winding crown. It is equipped with an innovative system we introduced in 1970 on the Sea-Dweller: a “triple lock” that creates three sealed zones. As early as 1926, our Oyster case came with a screw-down crown to prevent what “can” happen: water, sweat or dust entering the watch.

Then, in 1954, we conceived the Twinlock winding crown and its added waterproof barrier to counter what “could” happen: for instance, a rare incident which could compromise a gasket during a dive. As for our Triplock winding crown, it was created to face what purely “can’t” happen: the crown somehow unscrewing itself at 11,000 metres (36,090 feet) below the surface… Hence, whatever the depth, we’ve sealed our watches from the impossible.