Road Trail Run: Polar Vantage V and M Introduction: 14 Sensors Polar to Measure Wrist HR in the V & M, Running Power and Muscle Load Metrics in the V, Battery Life
Customizing Sport Profile Training Pages & Data Fields on the Suunto Spartan Trainer Wrist HR - YouTube
Suunto Spartan Trainer, test, analysis and opinion : Running a Marathon
Suunto Spartan Trainer Wrist HR review: a great watch for multi-sport athletes