THE BEST SIDE OF ROLEX OYSTER PERPETUAL DATE

The Oyster case is proof against 100m (330ft) and features the patented Twinlock screw-down crown. It is easy to screw and unscrew, but when it's locked down you really get a way of safety.Rolex formulated The three-seal unit identified as Triplock Crown for the Sea-Dweller in 1977 — and that has because proliferated to other Activity styles —