Quote Originally Posted by GLC1968 View Post
If you will ever wear your HRM for swimming, then go with Polar. They make the only ones designed to be used while in water. Timex is waterproof to prevent damage, but it won't transmit under water. The problem with the waterproof Polar is that you cannot change the battery yourself so when it runs out, you need to send it in for service. Timex (and I think Garmin) both allow you to change the battery in the strap yourself.

The Garmin 310XT with soft strap is supposed to be usable in the water.... It's waterproof for sure. Not sure about HR readings in the water. I haven't tested that. I really like the 'premium' soft strap compared to my older hard strap with the Reebok.