WRIST-BASED HEART RATE WHILE SWIMMING?! FIRST LOOK AT GARMIN 945 NEW BETA FEATURE - YouTube
Forerunner 945 – Wrist-based heart rate now available while swimming
Amazon.com: Garmin Swim 2, GPS Swimming Smartwatch for Pool and Open Water, Underwater Heart Rate, Records Distance, Pace, Stroke Count and Type, Slate Gray : Electronics
Garmin Forerunner 945 Bundle GPS multisport watch with HRM-Tri and HRM-Swim heart rate monitors at Crutchfield