Garmins HRM-Tri/Swim Heart-Rate Monitors deliver vital heart-rate data to your activity-tracking device during training for all three triathlon disciplines. They store up to 20 hours of data and forward it to any compatible device. Available: HRM-Tri/HRI Swim Band Provides a slip-free fit, even when pushing off the wall during pool training. HRM-Tri Soft band provides a secure, chafe-free fit whether youre on the bike, pounding the pavement or swimming in open water. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Gender: Male. Age Group: Adult. Type: Fitness Tracker Accessories.