Polar RC3 GPS Heart Rate Sensor Unit 3 Volts Lithium Cell Batteries 2 X (CR2032) | eBay
Polar RC3 GPS vs Polar V800: What is the difference?
Polar RC3 GPS w/HRM combines a built-in GPS for pace and distance data, a 12-hour battery life and Smart Coaching featur… | Sleek watch, Watch design, Garmin watch