Global Positioning Systems (GPS)

Polar Vantage V Sports Watch for Running, Cycling, Swimming, Etc. Precision Prime Sensor Fusion Technology Enabled, Waterproof, GPS Watch The first watch to measure running power from the wrist - no additional sensors or foot pods needed Polar's NEW advanced Optical HR sensor fusion technology that combines optical heart rate measurement with skin contact measurement. Interference... Polar Vantage V Sports Watch for Running, Cycling, Swimming, Etc. Precision Prime Sensor Fusion Technology Enabled, Waterproof, GPS Watch