Grit X is an exceptional GPS, Polar is created for those who practice trail running.

Polar fills a gap by creating what is "a Vantage V is more resistant".

This GPS Polar has a battery life of up to 40 hours of training, with the GPS recording every second, and the detection of cardio at the wrist.

The GPS and the Glonass are integrated with a Chipset from Sony, that improves the accuracy of the localization. Then, there is also a barometer altimeters: getting lost is impossible with the Grit X wrist!

In energy saving, the battery life is 100 hours!

Among the new features, you'll find theHill Splitter, an application that allows you to manage the intensity of the rhythm changes between climb and descent. The app automatically recognizes up-and-down, showing the slope, to improve the performance.

FuelWise is a second interesting feature: it alerts you when to eat during effort. A real problem for many trail runner.

Finally, the maps: the Grit X integrates the maps Koomot. So we can import the routes on the Polar Grit X, get a guide and "surf" in the safe waters along the route.

With the functions of the compass and Back to Start, then, the way home is always guaranteed.
Finally, with Open Weather Map we can see the weather in real time, with the current weather.

In short, Grit X is a GPS extreme, for those who want the maximum from himself and from the technology that wearing.

Other functions:
- The Polar Precision First: accommodation of detecting the heart pulse with 10 led
- Running Power: power measurement of running it directly from the device
- Recovery Pro: a function that measures the variability of the heart, serves to manage the balance between training and rest
- Training Load Pro: it analyzes our load by work, by providing data of the loading muscle, cardiac, and perceived
- Sleep Plus Stage: complete monitoring of your sleep
- Nightly Recharge: it measures the recovery of the autonomic nervous system, based on the data of heart rate.
- FitSpark: depending on the level of physical fitness and training registered, provide workouts of different types (example cardio, muscle strengthening, core)