In depth comparison and review of Polar Grit X and Amazfit GTR 4. Compare sizes, functions, displays, batteries and other important specifications and features to easily choose the right smartwatch for you. Our goal is to help you uncover differences between the products and find the watch that will best fit your needs.
| GENERAL | Polar Grit X | Amazfit GTR 4 |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Operating System | - | Zepp OS |
| Supported Host Device OS | iOS, Android | iOS 12 or later, Android 7.0 (Nougat) or later |
| Activity/Sport | Multisport | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Body Details | With band: 64 g Case only: 44 g |
With band: 34 g |
| Body Material | Stainless steel | Aluminium alloy frame |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Polar Grit X | Amazfit GTR 4 |
|---|
| Sensors | Digital compass, barometer, altimeter, heart rate | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, speed, calories burned, activity, heart rate, steps taken, pace, sleep stages, cadence, running power, swimming metrics, running index | Time, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, sleep stages, stress level, menstrual cycle, personal activity intelligence (PAI), recovery time, training load, sleep quality score, nap, sleep breathing quality |
| Modes | - | 154 sports modes |
| Goal Setting | Yes | Yes |
| Features | Fitness test, VO2 max, inactivity alert, alarm, Serene (breathing exercise), weather information, Nightly Recharge recovery measurement, FitSpark training guide, FuelWise smart fueling assistant, Hill Splitter, Route guidance, Route planning with Komoot, Energy sources | Strength training guidance, camera remote control, find phone function, answering a call, VO2 max, making a call, Find my Device, breathing training function, store & play music, sunrise/sunset times, auto pause, auto lap, realtime location tracking, music playback control, weather information, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
| Notifications | SMS, Email, incoming calls | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/QZSS receiver | - |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Polar Grit X | Amazfit GTR 4 |
|---|
| Wireless Interface | Bluetooth | Wi-Fi, Bluetooth 5.0 BLE |
|---|
| DISPLAY | Polar Grit X | Amazfit GTR 4 |
|---|
| Type | Colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 240 pixels | 466 x 466 pixels |
| Screen Size | 1.2" | 1.43" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Corning Gorilla Glass (scratch resistant glass) | Fingerprint-resistant coating, tempered glass, anti-glare bezel |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Polar Grit X | Amazfit GTR 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push buttons |
|---|
| CASE | Polar Grit X | Amazfit GTR 4 |
|---|
| Crystal Type | Laminated Corning Gorilla Glass | - |
|---|---|---|
| Case Shape | Round | Circular |
| Bezel | Stainless steel | - |
| Case Back | - | Polycarbonate |
| Case Details | White/silver | Black DLC | Silver | Aluminium alloy |
| BAND | Polar Grit X | Amazfit GTR 4 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | S | - |
| Band Width | 22 mm | 22 mm |
| Fits Wrist with Circumference | 130-190 mm | 150-215 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Silicone | Fluoroelastomer |
| Band Colour | White | Black | Green | Superspeed black | Vintage brown leather |
| STORAGE | Polar Grit X | Amazfit GTR 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | Polar Grit X | Amazfit GTR 4 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 346 mAh | 475 mAh |
| Battery Life | 7 day(s) | - |
| Battery Life Details | Watch mode - up to 7 days Training mode - up to 40 hour(s) |
Typical usage - up to 14 days Battery Saver Watch Mode - up to 24 days Clock - up to 50 days Heavy usage - up to 7 days Accurate mode (with GPS) - up to 25 hours GPS mode - up to 44 hours Power saving mode (with GPS) - up to 52 hours |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Polar Grit X | Amazfit GTR 4 |
|---|
| Included Accessories | USB charging cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | - | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Compliant Standards | MIL-STD 810G | - |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 50 °C | 45 °C |
| Min Operating Temperature | -20 °C | 0 °C |
| Warranty | 2-year warranty | 1-year warranty |
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