Polar M430 is a GPS running watch with wrist-based heart rate, advanced training features and 24/7 activity tracking — a top-level watch for runners who want more. No straps Polar M430 measures your heart rate from the wrist easily, accurately and reliably. Run wherever Track your pace, distance and altitude with the integrated GPS. When you run indoors, Polar M430 tracks pace and distance from your wrist movements. Fitness Test made easy Polar Fitness Test with wrist-based heart rate tests your fitness level anytime, anywhere — no straps needed. Running Program Get a personal and adaptive training plan that fits you and your goals. Running Index See how your running performance is developing. Sleep Plus Sleep is vital to your recovery and overall well-being. With Polar Sleep Plus you get valuable insights to your sleep. Learn about the quality of your sleep, get to know your sleeping patterns and let good sleeping habits push you towards better performance.