Sakasci Diamonds - ROLEX: Twinlock VS. Triplock Crown Twinlock: Water resistant to 330 feet with 2 rubber gaskets that keep dirt, dust and water out of the movement.The Twinlock crown is indicated
Rolex Daytona yellow gold triplock crown submariner, Daytona 7mm with case tube | eBay
ROLEX - Three dots of the same size on a Rolex screw-down winding crown identifies it as a Triplock in steel, equipped with a triple waterproofness system. www.instagram.com/rolex #Rolex #ThroughTheLoupe | Facebook