The HRM won't work without wearing the strap. (The strap is how it measures your heart rate. The heart rate is how it estimated the calories you burn.)
The strap should work fine under a woman's suit. For men, it tends to roll down the chest when swimming at fast pace, or especially when pushing off walls.
The HRM won't work without wearing the strap. (The strap is how it measures your heart rate. The heart rate is how it estimated the calories you burn.)
The strap should work fine under a woman's suit. For men, it tends to roll down the chest when swimming at fast pace, or especially when pushing off walls.
