Stainless steel is vital for any wristwatch – with the proximity to your skin, you can build up sweat and moisture, making the watch a corrosion magnet. In additon, waterproof watches are especially susceptible – as the threads holding the crown and case back can also corrode making huge damage to the watch.

In the beginning years of Swiss Watch manufacturing all Stainless Steel watches were getting made by using 316L stainless steel. 316L steel was firstly created in order to prevent rust and pits from salt water and sweat, but lately Rolex discovered salt and other materials were causing corrosion in the case back threads and watch case, so clearly 316L was not rust-proof in the long run. Rolex could clearly see that gold and platinum watches didn’t have this corrosion issue, so the stainless steel also needed fixing. In 2003 their entire production line changed to 904L. This 904L SS has a higher nickel and chromium content. It is resistant to corrosion and is used in high-technology aerospace and chemical industries. We took note of this, and in our quest to make the perfect Rolex super clone watch – we also use this same 904L stainless steel in our Rolex Swiss replica watches.