How do I change the battery in my Heart Rate Sensor (Polar Module) - Technical Information Library
Heart rate monitor watch battery replacement | watch, battery | Replacing the battery in a polar FT1 watch | By Techsmart Felixstowe | Facebook
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