Last Updated on October 11, 2020 by Jude Simeone

The Grit X is the latest wearable from Polar, it’s a rugged and durable device certified with MIL-STD-810G that ensures it can withstand harsher temperature, humidity, and drop. Just like the Vantage series and Ignite, the Grit X is fitness-focused and even more equipped to track your active life comprehensively with additional activity tracking features like Hill Splitter, FuelWise, and a handful of other new features.

Polar Grit X Full Specifications

	Polar Grit X
EDITOR'S RATING	Design: (4.6 / 5) Battery: (4.3 / 5) Fitness tracking: (4.6 / 5) Features: (3.5 / 5) Price: (3.5 / 5) Average: (4.1 / 5)
WHERE TO BUY	Check @ Amazon
ABOUT DEVICE
Device name	Polar Grit X
Device type	Fitness/Sport Smartwatch
Predessesor	__
Successor	__
Released date	April, 2020
Ideal for	Men
DISPLAY
Display type	MIP transflective LCD
Display size	1.2 inch
Display resolution	240 x 240 pixels
Pixel density	__
Input type	Touchscreen 5 physical buttons
Always-on	Yes
Customizable watch face	Yes
BODY
Shape	Circular
Dimension	47 x 47 x 13 mm
Weight	64 grams (including straps)
Casing material	Stainless steel/ Glass fiber reinforced polymer back
Strap/band material	Silicone
Bezel Material	Stainless steel
Strap size	22mm
Interchangeable band	Yes, 22mm
Screen protection	Corning Gorilla Glass 3
Water resistant/Protection	Yes, 10ATM (MIL-STD-810G)
Swim-proof	Yes, recommended
Color(s)	Black Gray White
MEMORY
RAM	__
Internal storage	__
Memory card slot	No
CONNECTIVITY
Bluetooth	Yes
Bluetooth calling	No
Wi-Fi	No
NFC	No
GPS	GPS/GLONASS/GALILEO/QZSS/A-GPS
CELLULAR TECHNOLOGY
Technology	No
SIM	No
Band	No
NOTIFICATIONS
Email alert	Yes
SMS alert	Yes
Calls alert	Yes
Event reminder	Yes
Weather	Yes
Third-party apps	Yes
FITNESS TRACKING
Sleep apnea	No
Sleep tracking	Yes
Steps	Yes
Floors climbed	Yes
Heart rate monitoring	Yes
Calories	Yes
Distance	Yes
Stress	Yes
VO2 Max.	Yes
Blood oxygen	No
Blood pressure	No
Menstrual cycle tracking	No
Swim tracking	Yes
Under-water heart rate tracking	Yes
Preloaded maps	_
On-screen workout modes	No
Triathlon mode	Yes
ECG Tracking	No
Preloaded sport modes	Yes
Safety tracking	No
MEDIA
Audio	No
Music streaming	No
Bluetooth music	No
Radio	No
Loudspeaker	No
Microphone	No
Camera	No
SENSORS
Accelerometer	Yes
Barometer/Altimeter	Yes
Heart rate monitor (HRM)	Yes
Compass	Yes
Gyroscope	Yes
Ambient light	Yes
Pulse Oximeter	No
ECG	No
Thermometer	_
Other sensors	--
PLATFORM
Operating system (OS)	_
Chipset	_
CPU	_
GPU	--
BATTERY
Type of battery	Non-removable Li-ion battery
Battery capacity	346mAh
Battery life	GPS and wrist-based heart rate: 40 hrs Watch mode with heart rate: Up to 7 days
Charging type	USB cradle
Charging time	About 1-2 hours
Battery saver mode	Yes
Solar power	No
Rapid charging	No
CLOCK FEATURES
Time/Date	Yes
Stopwatch	Yes
Alarm	Yes
OTHER FUNCTIONS
Control camera	_
Music control	Yes
Find phone	Yes
Text response	_
MISC
Payment system	None
Compatibility	Android and iOS
Companion app	Polar Flow app
Voice command	No
BOX CONTENTS
	Polar Grit X
	Straps
	USB cradle
	Quick start guide
NOTE: We can't guarantee that all the information on this table are 100% correct. Read full disclaimer. Please, report an error.
	Official Site

Polar Grit X Features

1. Design – Sturdily Built

The Grit X has a sophisticated design and it does look very stylish as well. It has a stainless steel case with reinforced glass fiber polymer for the back, yet quite lightweight at 64g. While the screen is protected with Corning Gorilla Glass(unverified version) and the finely crafted bezel makes it charming. The 1.2 inch MIP LCD touch display is always-on with anti-fingerprint coating and it’s s quite slim at 13mm. Straps are available in silicone which is soft and comfortable to wear all day long.

2. 1 Week Long Battery Life

The battery life of the Grit X is very impressive, you get about 40hrs long battery life with continuous GPS and heart rate tracking, while on normal mixed usage, it keeps you going for about 7 days.

3. A Comprehensive Activity Tracker

Just as mentioned earlier, the Grit X is fitness-focused and well equipped to track your active life comprehensively. It comes with an inbuilt GPS, altimeter, heart rate sensor, and accelerometer which enables it to track your heart rate, sleep stages, swimming activities, fitness level, calories, and more. Grit X will also give you information about the weather so you can plan well. Moreover, it features some new features such as turn-by-turn navigation, Hill Splitter that gives you performance data on your uphill and downhill activities, and FuelWise that gives recommendations to help you refuel better.

Below are some of the activity tracking features of the Grit X,

Activity Tracking Features	Grit X
Compass Has a compass that allows you to know your exact orientation.	Yes
Swimming Metrics Automatically detects your heart rate, swimming style, distance, pace, strokes and rest times. Distance and strokes get tracked also in open water swimming.	Yes
Fitness Level Test Test your fitness level easily in just 5 minutes without breaking a sweat. Learn more	Yes
Breathing Session For Stress Management Relax your body and calm down your mind with the help of a guided breathing exercise	Yes
Complete Sleep Monitoring Tracks your complete sleep cycle including stages and time spent in each.	Yes
Training Benefits Get motivating feedback immediately after training describing the effect of the session. Learn more	Yes
Weather Update Check current weather info and a 2-day forecast straight on your watch	Yes
Continuous Heart Rate Tracking Tracks your heart rate continuously to give you a comprehensive view of how your heart behaves during the day as well as calories.	Yes
Track Calories Know exactly how many calories you’ve burned based on your weight, height, age, gender, your individual maximum heart rate (HRmax) and how hard you’re training.	Yes
Running Program Get a personal and adaptive training plan that fits you and your goals. Learn more	Yes
Route Planning With Komoot Plan your route on Komoot, import it to your Polar Grit X and let the turn-by-turn guidance take care of navigation for you.	Yes
Route Guidance Upload your route to your Polar Grit X and stay on the right path with real-time guidance.	Yes
Running Index Get an estimate of your running VO2max and see how your running performance is developing.	Yes
Training Load Pro Quantify the strain of your training session and see how your training strains the different parts of your body.	Yes
Hill Splitter Get detailed data about your performance on the uphill and downhill sections of your session	Yes
FuelWise Learn to refuel and maintain adequate energy levels during your long training sessions.	Yes
FitSpark Training Guide Polar Grit X and the FitSpark™ training guide make sure you’re prepared for your pursuit to conquer the trails with ready-made daily workouts that match your recovery, readiness, and training history. Learn more	Yes
Energy Sources See how your body uses different energy sources during a training session. Polar Grit X divides your energy usage into carbs, proteins and fats.	Yes
Running Power Get more comprehensive insight into the intensity of your running sessions. Learn more	Yes
Recovery Pro See how recovered your body is and get recovery feedback. Learn more	No
Strava Live Segments Make your runs and rides more exciting with Strava Live Segments. Get alerts about nearby segments, see real-time performance data during a segment and check your results right after you finish.	Yes
Multisport Training It allows you to do multiple sports in one training session and seamlessly switch between sports without interrupting the recording of your training.	Yes
Inbuilt GPS/QZSS/GLONASS/A-GPS/GALILEO Built-in GPS provides accurate speed and distance measurement for a range of outdoor sports, and allows you to see your route on the map in the Polar Flow app and web service after your session.	Yes
Leg Recovery Test The Leg Recovery Test tells you whether your legs are ready for high-intensity training.	No
Running Performance Test The Running Performance Test helps you keep track of your progress and personalize your heart rate, speed, and power zones.	No
Cycling Performance Test Helps you follow your progress, allows you to personalize your power zones, and tells you your personal functional threshold power. A compatible power meter required.	No

4. Notifications

Although Grit X lacks Wi-Fi, it’s equipped with Bluetooth that enables notification features. It’s able to notify you when there’s a new message on your phone so you don’t miss important updates.

Pros

Cons

Polar Grit X Review

Jude Simeone

Hi! I’m Jude, the chief editor at Smartwatchseries.com

I’m a scientist, a 3D artist, and a passionate fitness enthusiast. On here, I and other smartwatch fans work hard to help you find the right smartwatch for you with our guides, reviews, and comparisons.

Our aim is to become better at providing useful content, please lets us know via the contact us form if there is any way we can improve.