Polar Grit X Pro – GPS Multisport Smartwatch – Military Durability, Sapphire Glass, Wrist-based Heart Rate, Long Battery Life, Navigation – Best for Outdoor Sports, Trail Running, Hiking
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£195.83
Price: £195.83
(as of May 15, 2025 04:49:45 UTC – Details)
From the manufacturer
Polar Grit X PRO Premium Outdoor Multisport Watch
Built for military-level durability with sapphire glass and ultra-long battery, equipping you with new navigation tools, always-on outdoor features and Polar’s ultimate training solutions so you can go wherever your heart takes you.
Hill Splitter
Track every ascent and descent with Hill Splitter – the automatic uphill and downhill detector that uses your speed, distance and altitude data to provide detailed insights for every hill on your route.
Comprehensive Tests
RUNNING PERFORMANCE TEST helps you keep track of your progress and personalize your heart rate, speed and power zones.LEG RECOVERY TEST tells you whether your legs are ready for high intensity training in just a couple of minutes without any specialist equipment.CYCLING PERFORMANCE TEST allows you to personalize your power zones and tells you your personal functional threshold power (FTP) [requires a compatible power meter].ORTHOSTATIC TEST AND RECOVERY PRO measure your recovery from heart rate and heart rate variability (HRV) and give you feedback for pro athlete-level recovery. [requires Polar H10 or H9 heart rate sensor]
Ultra-Long Battery Life
In watch mode with continuous heart rate tracking on, you get up to 7 days of battery life.
Up to 40 hours training timeUp to 7 days continuous HR trackingMultiple power-save options
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Customer Reviews
4.2 out of 5 stars 2,115
4.2 out of 5 stars 2,115
4.2 out of 5 stars 3,642
Price
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£403.90£403.90
Turn-by-Turn Guidance powered by komoot
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Always-On Outdoor dashboards (altimeter, compass, location coordinates, sunlight times)
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no data
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Track Back navigation & Route and Elevation Profiles
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no data
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Recovery Pro*, Running & Cycling Performance tests (*HR Sensor required)
✓* Running performance test ✓*
Automatic Hill Splitter
✓
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Training Load Pro automatic training strain monitor
✓
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FuelWise smart fueling assistant & Energy Sources insights
✓
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Watchface
Sapphire Glass Gorilla Glass Laminated Gorilla Glass
Weight
79 g 64 g 52 g
Battery Life
Up to 40h Training Mode (up to 100h w/ power-save options); up to 7 days Watch Mode. Up to 40h Training Mode (up to 100h w/ power-save options); up to 7 days Watch Mode. Up to 40h Training Mode (up to 100h w/ power-save options); up to 7 days Watch Mode.
Batteries : 1 Lithium Polymer batteries required. (included)
Is discontinued by manufacturer : No
Product Dimensions : 4.7 x 4.7 x 1.3 cm; 74 g
Date First Available : 13 Oct. 2021
Manufacturer : Polar
ASIN : B09GY34QRT
Item model number : 90085773
Department : Unisex
Guaranteed software updates until : unknown
RUGGED DURABILITY: Scratch-resistant sapphire glass and FKM wristbands make this watch even stronger than its predecessor. With MIL-STD-810G premium design, up to 100m water-resistance, it’s built to handle any environment.
ULTRA LONG BATTERY gives you up to 40h of trainings with full GPS and HR tracking (even up to 100h with power save options). Up to 7 days in watch mode with 24/7 HR tracking.
UNRIVALED OHR TRACKING AND GPS ACCURACY with our world-renowned wrist-based heart rate monitoring. Built-in GPS provides exact locations and assisted-GPS ensures fast fix times.
TURN-BY-TURN GUIDANCE POWERED BY KOMOOT – enjoy real-time, turn-by-turn navigation on your watch to keep you on the right track.
FULLY AUTOMATIC AND INTELLIGENT OVERNIGHT RECOVERY MEASUREMENT helps you to track your sleep behavior and understand how well you recovered from training and other factors during the night so that you can make optimal choices for the day ahead.
Customers say
Customers find the smartwatch accurate, with one noting its heart rate sensor performs well, and they appreciate its great battery life and solid build quality. The device is easy to navigate, has a good design, and offers many features, with one customer highlighting the additional options available in Flow. While customers find the display good-looking, opinions about brightness are mixed.

£195.83