Polar Vantage M2 (weighs only 45 g) is packed full of features like accurate wrist-based heart monitoring, running program, ready-made daily workouts, inbuilt GPS, recovery tracking & smart fuelling assistant. Polar Vantage M2 is designed for that athlete attitude. If you love to keep finding new ways to stay fit and stay motivated, it’s your all-in-one companion on your way towards new PR’s. Accurate heart rate monitoring & Integrated GPS Long battery life: up to 30 hours of training time with GPS and OHR Training Load Pro & Running program Fitspark training guide Nightly Recharge sleep tracking Fuelwise & Energy Sources Weekly summary Music controls, Weather, Phone notifications, Customisable watch face Using real-time heart rate data during your workouts means you have instant insight into how your body is responding. This means you’ll be training smarter, which is always better than simply training harder. Frequency: How many times you exercise during a period of time, for example per week. Duration: How long you exercise at a time, usually counted in minutes. Intensity: This one is a bit more complicated – and that’s where your heart rate comes in. Your heart rate is one of the best indicators of how hard your body is working during training. Instead of trying to ‘guesstimate’ the intensity of your workout, your best bet is to rely on your heart rate which is a trackable number, just like frequency and duration.