ROLEX - Helium escape valve opens when the difference in pressure between the inside and outside of the watch reaches 3 to 5 bars, allowing helium to escape, thereby protecting the watch. #
![ROLEX | SEA-DWELLER DOUBLE RED, REFERENCE 1665, STAINLESS STEEL WRISTWATCH WITH HELIUM ESCAPE VALVE, DATE AND BRACELET, CIRCA 1967 | Watches Online | Watches | Sotheby's ROLEX | SEA-DWELLER DOUBLE RED, REFERENCE 1665, STAINLESS STEEL WRISTWATCH WITH HELIUM ESCAPE VALVE, DATE AND BRACELET, CIRCA 1967 | Watches Online | Watches | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/22d7902/2147483647/strip/true/crop/1242x2000+0+0/resize/2048x3298!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fe1%2F87%2F21c72d614e0b8525e5daf32b4c15%2Fl19075-b77tl-1.jpg)
ROLEX | SEA-DWELLER DOUBLE RED, REFERENCE 1665, STAINLESS STEEL WRISTWATCH WITH HELIUM ESCAPE VALVE, DATE AND BRACELET, CIRCA 1967 | Watches Online | Watches | Sotheby's
![Pre - Owned ROLEX Oyster Perpetual 41 with a bright blue dial and an Oyster bracelet M124300-0003 Complete Pre - Owned ROLEX Oyster Perpetual 41 with a bright blue dial and an Oyster bracelet M124300-0003 Complete](https://cdn11.bigcommerce.com/s-88ec4/images/stencil/1280x1280/products/979/12495/Rolex_Submariner_40mm_116610_Superior_Green_Ceramic_Bezel_For_116610LV_Hulk_Mint-4__15826.1679697134.jpg?c=2)
Pre - Owned ROLEX Oyster Perpetual 41 with a bright blue dial and an Oyster bracelet M124300-0003 Complete
![Rolex. A Rare Stainless Steel Automatic Wristwatch with Helium Escape Valve, Center Seconds and Bracelet Rolex. A Rare Stainless Steel Automatic Wristwatch with Helium Escape Valve, Center Seconds and Bracelet](https://www.christies.com/img/LotImages/2016/NYR/2016_NYR_12161_0077_000(rolex_a_rare_stainless_steel_automatic_wristwatch_with_helium_escape_v095239).jpg?mode=max)