Amazon.com : POLAR VANTAGE V – Premium GPS Multisport Watch for Multisport & Triathlon Training (Heart Rate Monitor, Running Power, Waterproof), Standard Edition, Orange : Sports & Outdoors
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