Polar 90042164, RCX3M GPS - Black Shop for Heart Rate Monitors from HealthyLivingEquipment.com! For recreational runners and cyclists who want smart guidance while preparing for an event, the Polar RCX3M GPS Watch is a great choice. This watch tracks your route, speed, and distance, and it improves your run with personal sport zones and a Running Index feature that gives you instant post-workout feedback. About Polar ElectroTrue expertise in sports, physiology, and electronics has helped Polar Electro maintain leadership in sports technology and heart rate monitors since 1977. Their products help you understand what your body is saying in order to effectively target workouts. These products cater to people of all fitness levels, and are backed by Polar's stellar support and advice. They can help you improve your sports performance, aid rehabilitation and weight management, or just help you enjoy a healthier lifestyle. Polar's team of ambitious and talented professionals are passionate about delivering the very best products and support to their customers. It is this passion that has made Polar Electro a success.