Functions: GPS | Optical heart rate sensor | Android Wear
Polar M600 is the first running watch Polar and in the second they work with Android Wear. This is undoubtedly a fitness device so that almost have nothing to compare it to.
The first thing you need to do is to connect the Polar Flow web service, and you can log in the fitness platform with the help of a special button on the clock. One-click launches the app on your phone, which is your gateway to tracking workouts. GPS tracks your running training, statistics, the metric is sent to the application Flow, which makes them the best smartwatch for runners.