There is a company that makes swim goggles for $200 that does pace and heart rate, though that's only one of the disciplines. https://www.formswim.com/ https:/

There is a company that makes swim goggles for $200 that does pace and heart rate, though that's only one of the disciplines. https://www.formswim.com/ https://www.formswim.com/ (I am in no way affiliated with this company)