Can I really use my Apple Watch swimming?

Hello,

This article has more info about the different Apple Watch versions and their water resistance.

About Apple Watch water resistance - Apple Support

"Can I go swimming or take a shower with my Apple Watch?

Apple Watch Series 1 and Apple Watch (1st generation) are splash and water resistant, but submerging Apple Watch Series 1 and Apple Watch (1st generation) isn't recommended.

Apple Watch Series 2 and newer may be used for shallow water activities like swimming in a pool or ocean. However, Apple Watch Series 2 and newer shouldn't be used for scuba diving, water skiing, or other activities involving high velocity water or submersion below shallow depth. "

I hope this helps.

See this;

Swim with your Watch