In depth comparison and review of Polar Unite 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 Unite | 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 |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Width | 43.4 mm | 36.5 mm |
| Height | 43.4 mm | 42.7 mm |
| Depth | 10.4 mm | 9.9 mm |
| Weight | 32 g | 27 g |
| Body Material | Fibreglass reinforced polymer | Stainless steel, aluminium alloy frame |
| Protection | Water-resistant | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Polar Unite | Amazfit GTS 4 |
|---|
| Sensors | Accelerometer, ambient light sensor, optical heart sensor | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
|---|---|---|
| Tracking Data | Distance, calories burned, activity, 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 | Fitness test, Bluetooth Smart technology, inactivity alert, GPS via mobile, guided breathing session, Nightly Recharge recovery measurement, FitSpark training guide | 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 | Calendar, SMS, Email | 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 |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Polar Unite | Amazfit GTS 4 |
|---|
| Wireless Interface | Bluetooth | Wi-Fi, Bluetooth 5.0 |
|---|---|---|
| Connectors | USB | - |
| DISPLAY | Polar Unite | Amazfit GTS 4 |
|---|
| Type | IPS - colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 204 pixels | 390 x 450 pixels |
| Screen Size | - | 1.75" |
| Pixel Density | - | 341 ppi |
| Screen Protection | - | Tempered glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Polar Unite | Amazfit GTS 4 |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push button |
|---|
| CASE | Polar Unite | Amazfit GTS 4 |
|---|
| Case Shape | Round | Rectangular |
|---|---|---|
| Case Details | - | Aluminium alloy |
| BAND | Polar Unite | Amazfit GTS 4 |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | S/L | - |
| Band Width | 20 mm | 20 mm |
| Fits Wrist with Circumference | 130-210 mm | 140-200 mm |
| Changeable | Yes | Yes |
| Clasp Type | Snap & slip | Pin buckle |
| Band Material | Silicone | Fluoroelastomer |
| Band Colour | Black | Blue | Pink | White | Infinite black | Misty white | Rosebud pink |
| STORAGE | Polar Unite | Amazfit GTS 4 |
|---|
| User Memory | - | 2.3 GB |
|---|
| BATTERY | Polar Unite | Amazfit GTS 4 |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 174 mAh | 300 mAh |
| Battery Life Details | Watch mode + HR - up to 4 days Training mode + HR - up to 50 hour(s) |
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 Unite | Amazfit GTS 4 |
|---|
| Included Accessories | Charging/data cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Polar Fitness Test, Polar Flow | To Do List, Games, Stopwatch, Calendar, World clock, Alarm Clock, Reminders, Timer, Compass, Countdown timer |
| Max Depth of Water Resistance | 30 m | 50 m |
| Max Operating Temperature | 50 °C | 45 °C |
| Min Operating Temperature | -10 °C | 0 °C |
| Warranty | 2-year warranty | 1-year warranty |
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