Polar Grit X

Extremely lightweight outdoor watch with ultra long battery life: Up to 40h battery life with full GPS and HR tracking (up to 100h with power save options), up to 7 days in watch mode with 24/7 HR. At 64 grams, Grit X weights 20-30% less than usual outdoor watches.
Military Level Durability: Grit X passed several MIL-STD-810G tests and is water resistance up to 100m / 10ATM.
Navigation: The real-time turn-by-turn route guidance, route import from Komoot keep you on the right track. Compass & barometric altitude (in training mode) and Polar’s unique training features improve performance.
Automatically Detected Uphill And Downhill stats from Hill Splitter tell you how you performed on the ascent and descent sections of your route by using your speed, distance and altitude data.
Automatic Overnight Recovery Measurement: Polar Nightly Recharge lets you know when you can safely push your body further.
+130 Sport Profiles. Polar Flow for planning and analyzing your training sessions.