Stainless steel has many advantages for watch buyers, but sometimes they tend to get a bad rap. There are so many bad brands using it that people might associate those words with not enough quality. But anyone who really understands watches knows that there are many kinds of stainless steel, and some versions are really amazing. 904L stainless steel is a combination of nickel, molybdenum and chromium and is not meant to be handled with care. If that little scientific regression doesn't convince you, remember that 904L is Rolex's top choice for premium stainless steel watches.

904L Basics
If you're looking for a luxury stainless steel watch, you've probably seen 316L or 904L. Both types of stainless steel are usually water resistant, so you don't have to worry about rust. Whichever you choose, there are a number of ways you can customize your watch to get the look you want. But 904L is more durable than 316L and is perfect for someone who likes to be on the go. 316L may not be as delicate as you might think, but it is more likely to scratch or rust under extreme stress. Rolex knows that their customers tend to be aggressive types, so they know how important it is to offer a product that can handle all the playtime.

How should I use the 904L?

You probably don't want to pair your 904L watch with your fanciest evening dress, but really all other situations are fair game. This is one of the reasons why stainless steel is so popular. A Rolex watch made of this material will look just as good at a casual dinner party as it does in the most powerful boardroom. Of course, people buy these watches because they are ready for something more exciting than a meal or meeting. Use them while hiking, boating, or flying without worrying about damage. 904L is not magnetic in the slightest, making it resistant to damage from even the tiniest gap in the strap.

any downsides?

There are few downsides to the 904L watch, but men with nickel allergies should be careful. Complaints about this are relatively rare and definitely not common, but it's something to be aware of before you make your final decision.
904L stainless steel is just another example of Rolex quality. Once they realized that 316L was not up to par, they decided that their customers were too important to risk their stainless steel watches spoiling. Their efforts have paid off handsomely for the company and their clients.