Garmin HRM-Tri

Specifically designed for triathletes, the Garmin HRM-Tri is their smallest and lightest heart rate monitor, which fits within the width of the strap. The HRM-Tri stores heart rate data when underwater, then forwards it to your wearable at the end of your swim. When running, this pairing allows your compatible wearable to report 6 running dynamics metrics: cadence, stride length, ground contact time, ground contact time balance, vertical oscillation and vertical ratio.Features: Easily adjustable strap Soft, rounded edges and covered seams to provide comfort Stores and forwards heart rate data to Forerunner 920XT Typically used for bike rides, runs, triathlon (open water swimming) and triathlon (pool swim) while wearing triathlon kit

Specifically designed for triathletes
Garmin’s smallest and lightest heart rate monitor (HRM)
Comfortable, easily adjustable strap. Soft rounded edges and covered seams
Suitable for use when running, cycling, swimming
Stores and forwards heart rate data to your compatible Garmin fitness device