best heart rate monitors for swimming
The first thing that struck me about the Zeacool Fitness Tracker 24/7 Heart Rate, Blood Oxygen Blood wasn’t just its sleek 1.10-inch AMOLED HD Touch screen but how effortlessly it handles water. After hands-on testing in the pool, I was impressed by its 5 ATM waterproof rating—no worries about swimming, diving, or getting caught in … Read more