| Standard heart rate monitor | Premium heart rate monitor | HRM-Run | HRM-Tri | HRM-Swim |
ANT+ heart rate | • | • | • | • | • |
Supports heart rate variability and advanced heart rate features | • | • | • | • | • |
2.4 GHz ANT wireless communication protocol | • | • | • | • | • |
Running dynamics | | | • | • | |
Stores and forwards heart rate | | | | • | • |
Swim interval heart rate statistics | | | | • | • |
Non-slip design for pool swimming | | | | | • |
Pool chemical resistant | | | | | • |
Battery life | 3 years (1 hour/day) | 4.5 years (1 hour/day) | 1 year (Running 1 hour/day) | 10 months (Tri training 1 hour/day) | 18 months (Swimming 3 hours/week) |
Battery type | CR2032 | CR2032 | CR2032 | CR2032 | CR2032 |
Module size | N/A | 34.0 x 62.2 x 8.0 mm | 34.0 x 62.2 x 10.0 mm | 29.4 x 51.4 x 8.5 mm | 29.4 x 51.4 x 8.5 mm |
Size adjustment | Bi-fold | Tri-fold | Tri-fold | Bi-fold | Bi-fold |
Sizing range | 24.2” - 68.1” (61.4 - 173.0 cm) | 25.2” - 56.7” (64.0 - 144.0 cm) | 25.2” - 56.7” (64.0 - 144.0 cm) | 23.5” - 56.0” (60.0 - 142.0 cm) | 23.0” - 57.0” (58.0 - 145.0 cm) |
Water rating | 1 ATM | 3 ATM | 3 ATM | 5 ATM | 5 ATM |
Module weight | 2.6 oz (73 g) | 1.9 oz (55 g) | 1.9 oz (55 g) | 1.7 oz (49 g) | 1.8 oz (51 g) |