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Enhance your triathlon experience by pairing HRM-Tri with your Forerunner® 920XT. The HRM-Tri stores heart rate data when underwater, then forwards it to the 920XT. The smallest and lightest module fits within the width of the strap. Its soft, rounded edges and covered seams make the strap super-comfortable out of the water, too.
Unit dimensions (LxWxD): 23.5”-56.0” x 1.2” x 0.5” (60.0 - 142.0 x 3.0 x 1.2 cm)
Weight: 2.1 oz (59 g)
Module size: 29.4 x 51.4 x 8.5 mm
Module weight: 1.7 oz (49 g)
Size adjustment: Bi-fold
Sizing range: 23.5”-56.0” (60.0 - 142.0 cm)
Battery life: 10 months (Tri training 1 hour per day)
Water rating: 5 ATM
ANT+® heart rate: yes
Supports heart rate variability and advanced heart rate features: yes