Running with the Gold Stainless Steel Case with Milanese Loop

No, I don't mean waterproof. The enclosure that holds the magnet will suffer from corrosion from your sweat (which will get inside the enclosure and will damage it and eat away at the glue. Use a nylon sports loop or a solo loop for your jogging. The Milanese is designed for dress up.

Keep in mind the end of the band that holds the magnet, and the glue, are not water resistant so if you sweat heavily I wouldn't use it for working out.

Very, I have many and swap them out often.