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HRM-Tri Strap

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Garmin's HRM-Tri strap is designed for adding heart-rate measurements to open-water swims or occasional pool swims. It allows HR data to be stored while in the water when no connection to the device is available and then uploads the data to the device using ANT+® connectivity at the end of the session. The inclusion of accelerometers lets it calculate advanced Running Dynamics as well, when used with compatible devices.

Battery life up to 10 months (based on 1 hour of tri training per day). Runs on one CR2032 battery. Compatible with Garmin Fenix 3, Epix, Forerunner 920XT, and Tactix® Bravo series watches. Claimed weight is 59 g. 5 ATM waterproof rating.

Note: For regular pool use, Garmin recommends using their HRM-Swim strap.