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
Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS, Heart Rate, Sleep & Swim Tracking, Rosewood/Rosewood, One Size (S &L Bands Included) - Walmart.com
Garmin Vivomove HR Review: The Least Intrusive Smartwatch