How waterproof is the Apple Watch?

From the Apple Watch Series 2 onward, these smartwatches are waterproof up to a 50m depth (WR50M). That means you can completely submerge the Watch in the water. You can easily wear the watch when you go swimming in the sea or a pool or take a shower. Except for the Apple Watch Ultra, you can't keep your Watch on while diving, water skiing, or during other water activities. The water speed and water depth would be too much for it. When it's in the water, the Apple Watch automatically locks the screen. Water can still enter the smartwatch via the built-in speaker. Rotate the Digital Crown when you're out of the water. The speaker will make a beeping sound and blow the water out of your Watch.

Feel free to dive into the water with silicone Apple watch straps. Not all Apple Watch straps are water-resistant. It's not a good idea to swim or shower with the metal and leather straps. The nylon straps aren't suitable for swimming either.

The Apple Watch is waterproof, and you'll want to keep it that way. That's why Apple doesn't recommend to expose the smartwatch to products like shampoo and perfume. These products could affect the waterproofness.