Rolex Watches New Collection : Two discreet dots on a Rolex screw-down winding crown signify that it is equipped with two sealed zones to keep its mechanism perfectly water-resistant. The Twinlock system ensures the watch’s waterproofness to 100 metres (330 feet).

Rolex Watches New Collection :

Illustration

Description

Two discreet dots on a Rolex screw-down winding crown signify that it is equipped with two sealed zones to keep its mechanism perfectly water-resistant. The Twinlock system ensures the watch's waterproofness to 100 metres (330 feet).