Measures heart rate and heart rate variability (R-R) with great comfort and accuracy
Smallest heart rate sensor on the market, weights only 40,6 g? / 1,43 oz
Works in all sports, including running, cycling, workouts and swimming (water resistant to 30 m/98 ft)
Signal range: ~3 m/9.8 ft, allowing you to do sports like weight training, team sports and martial arts without wearing your watch
Heart Rate Memory Buffering – with Suunto 3, 5, 9, Spartan, Ambit 3 & Traverse watches.