accuracy of heart rate monitoring systems have always been questioned. but not now. Suunto hopes to quell those with the Spartan Sport Wrist HR. It features an optical heart-rate sensor from Valencell, a highly respected company in the field. its mainly meant for people who workout regular;y.

Optical heart rate sensor is an addition to existing features like ability to track activity across 80 different sports, GPS-route navigation and smartphone integration.
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