Hey there, wave riders! say HELLO to the ultimate companion for your surfing and water sport adventures: the Soundswell Smartwatch Series
A smartwatch for surfing? Really?" Oh, absolutely! SoundSwell allows you to take your favorite audio content from Spotify, Apple Music, or Pandora to the waves. Since bluetooth has a limited range through water, Soundswell Smartwatch Series transforms your Apple, Garmin, or Samsung Galaxy watch. The actual watches are sold separately.

A cool idea and works great according to the reviews!
Check them out HERE!