Orders placed after 4pm on weekdays will not ship until the next business day. Orders placed after 12pm Fridays will not ship until the following Monday.
Faster shipping methods may be available; just upgrade during checkout.
*Some exclusions apply.
Enter new zip code to refresh estimated delivery time.
Enhance your triathlon training and experience with the HRM-Tri Heart Rate Monitor from Garmin. This triathlete-specific device records and stores your heart rate data on land and in the water, giving you a more complete picture of your heart rate performance during your triathlon or triathlon training. It stores up to 20 hours of activity data and automatically sends it to your separately available Garmin device—for example, the Forerunner 920XT. If you're recording heart rate data while you're in water, the HRM-Tri will send that data once you've exited the water to your compatible device.
In addition to recording heart rate data, the HRM-Tri also houses an accelerometer that enables it to track three running dynamics: your cadence, vertical oscillation, and ground contact time. Tracking and understanding these metrics can help you become a more efficient runner and triathlete, as they provide real-time feedback about your running form.
ANT+ heart rate
Supports heart rate variability and advanced heart rate features