Rolex Oyster watches are made with waterproof components. When many other brand use case backs attached with screws, the Rolex Oyster has a threaded Oyster case that screw down the element of the watch on the middle case. Tips: I recommend you also read about the following subject if you're interested: why did my Rolex stop?
The Rolex Oyster Oyster case locks the watch hermetically as the gaskets collapse. Due to the compression of the gaskets, sealing the case creates a higher level of water resistance.
Rolex Oyster can go in the water because of the way they are designed. Hans Wilsdorf, the founder of Rolex, placed an emphasis on protecting the watches from water and dust. To protect a timepiece movement from moisture and dust, he understood that a dry and airtight case is essential. If you're seeking for information about Rolex Daytona Swiss eta waterproof solid gold in particular, you could find it here.
In 1926, Hans Wilsford conceived and patented the Oyster, a water-resistant timekeeper case. Rolex Oyster watch cases are at the heart of every modern Oyster timepiece. Every section is threaded and screwed together, just like a submarine hatch. Internal gaskets keeps the watch movement hermetically sealed inside the case. The technique is extremely efficient and outperforms screw-sealed watch casings.
The weakest feature of water-resistant timepieces has always been the winding crown. If there is an opening in the case due to the crown stem, it does not matter how waterproof the case is. The opening on the side of the wristwatch case has been a challenge for watch manufacturers. Many watchmakers use a gasket around the crown to prevent water from penetrating through the stem.
The water resistance of a timekeeper is most vulnerable at the crown stem hole. A hole at the case edge is used to connect the crown stem to the movement. The crown is frequently compressed, chafed, and stressed as it is rotated, wrapped, and spun to correct the timekeeper.
The innovative Twinlock technology on the Rolex Oyster provides higher water resistance than a standard crown gasket. The model's crown, which screws to the case, now features a threaded stem crown. Rolex's Twinlock mechanism, which combines threaded stems with rubber o rings to boost water resistance, improves the timepiece's water resistance. Several gaskets are compressed inside and around the crown stem in this technique.
To start operating a mechanical watch, you must remove the crown and rotate it. It's the weak spot in model waterproofing. Water can enter through the crown stem and tube. When the crown is pulled out, the wrist watch is no longer watertight. Rolex timepieces can be damaged by moisture and dust. Rolex has been improving its crown's water resistance for decades.
Modern Rolex Oyster are equipped with a patented Twinlock screw down crown with guaranteed waterproof up to 100m(300ft). Double waterproofness is provided by a Twinlock winding crown on the Rolex Oyster. Two sealed zones are present, one inside the tube and one inside the crown. As long as the Oyster 's crown is screwed down, its water-resistance is guaranteed to 100m(300ft) depth. The Twinlock's water resistance is superior to that of many other watches when the crown is screwed down. The Rolex Oyster will remain resistant to 10 ATM/100m/300ft if you use it as intended. However, keep in mind that the Rolex Oyster watertfight warranty will necessitate servicing and maintenance over the watch's lifetime.