Hill Splitter Provides detailed performance data on the uphill and downhill sections of your session. Route Guidance A function that allows you to upload your route straight to the Polar Grit X and helps you to stay on the right path with real-time guidance. Wrist-Based Heart Rate Built into the wrist of the Polar Grit X watch is an advanced heart rate monitor which Precision Prime sensor fusion technology. Fit Spark Training Guide the Fit Spark training guide helps you conquer the trails with ready-made daily workouts that match your recovery, readiness, and training history. Sport Profiles The watch comes with over 130 different sports. Each sport comes with a different profile and additional sports can be added via Polar Flow. The profiles provide the metrics that are most appropriate for your chosen sport. Swimming Metrics Incredibly water resistant, the Polar Grit X, is great for swimming. When you are in swim mode the watch will detect your heart rate (even when submerged in water), swimming style, distance, pace, strokes, and rest times. Distance and strokes also get tracked during open water swimming. Phone Notifications Keep connected when you are on the move with all your phone notifications coming straight to your computer screen. Once the watch is connected to your phone you can receive alerts for incoming calls, messages, emails, calendar events, and more. Fuel Wise Smart Fuelling Assistant Keep your pace and do not tire yourself out with the Fuel Wise feature which lets you know when it is time to refuel - helping you to maintain energy levels during longer sessions. Route Planning with Komoot Plan out routes on Komoot and then import your created routes to the Polar Grit X with turn-by-turn navigation so that you do not get off track. Weather Always stay prepared with the Pure Grit X weather features which lets you check current information plus a 2-day forecast straight on the watch screen.