In depth comparison and review of Polar Grit X Pro and Amazfit GTS 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 Pro | Amazfit GTS 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 |
| Width | - | 36.5 mm |
| Height | - | 42.7 mm |
| Depth | - | 9.9 mm |
| Weight | - | 27 g |
| Body Details | With leather band: 53 g With FKM band: 73 g |
- |
| Body Material | Aerospace titanium | Stainless steel, aluminium alloy frame |
| Protection | Water-resistant | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Sensors | Accelerometer, digital compass, barometer, optical heart sensor | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, speed, calories burned, sleep activity, heart rate, steps taken | 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 | SMS notification, Email notification, mobile notifications, social apps notification, inactivity alert, incoming calls notification, sunrise/sunset times, Serene (breathing exercise), music playback control, weather information, Nightly Recharge recovery measurement, FitSpark training guide, FuelWise smart fueling assistant, Hill Splitter, Route guidance, Route planning with Komoot | 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, instant message reply, PeakBeats workout status algorithm, ExerSense algorithm, Dual-band navigation, linear motor, Virtual Pacer, track run mode, smart trajectory correction, route file import |
| Notifications | - | SMS, incoming calls, applications, high and low heart rate, low blood-oxygen, high stress level |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Audio alert, vibration alert, visual interface | Audio alert, vibration alert, visual interface |
| Navigation (GPS) | GPS/A-GPS/Galileo/GLONASS/QZSS receiver | - |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Wireless Interface | Bluetooth | Wi-Fi, Bluetooth 5.0 |
|---|
| DISPLAY | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 240 pixels | 390 x 450 pixels |
| Screen Size | 1.2" | 1.75" |
| Pixel Density | - | 341 ppi |
| Screen Protection | Sapphire glass | Tempered glass |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push button |
|---|
| CASE | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Case Shape | Round | Rectangular |
|---|---|---|
| Bezel | Titanium | - |
| Case Back | Glass fibre reinforced polymer | - |
| Case Details | Titan | Black DLC | Aluminium alloy |
| BAND | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | M/L | - |
| Band Width | 22 mm | 20 mm |
| Fits Wrist with Circumference | 145-215 mm | 140-200 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Pin buckle |
| Band Material | Perforated leather | Fluoroelastomer |
| Band Colour | Grey | Black | Infinite black | Misty white | Rosebud pink |
| STORAGE | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 346 mAh | 300 mAh |
| Battery Life | 7 day(s) | - |
| Battery Life Details | Training mode (GPS and wrist-based heart rate) - up to 40 hour(s) Watch mode - up to 7 days Training mode (with power save options) |
Typical usage - up to 8 days Battery Saver Watch Mode - up to 16 days Clock - up to 30 days Heavy usage - up to 4 days Accurate mode (with GPS) - up to 16 hours GPS mode - up to 28 hours Power saving mode (with GPS) - up to 33 hours |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2 hour(s) |
| MISCELLANEOUS | Polar Grit X Pro | Amazfit GTS 4 |
|---|
| Included Accessories | USB charging cable, FKM wristband | Magnetic charging cable |
|---|---|---|
| Preloaded Software | - | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 50 °C | 45 °C |
| Min Operating Temperature | -20 °C | 0 °C |
| Warranty | - | 1-year warranty |
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