Detailed comparison and review of Polar Unite and Amazfit GTR 4. With our comprehensive overview, you can simply compare size, design, functions, battery capacities, but also other key features of both smartwatches and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the watch that best fits your needs and expectations.
GENERAL | Polar Unite | Amazfit GTR 4 |
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Product Type | Sport watch | Smart watch |
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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 | - |
Height | 43.4 mm | - |
Depth | 10.4 mm | - |
Weight | 32 g | - |
Body Details | - | With band: 34 g |
Body Material | Fibreglass reinforced polymer | Aluminium alloy frame |
Protection | Water-resistant | Water-resistant |
Clock Display | Yes | Yes |
FEATURES | Polar Unite | Amazfit GTR 4 |
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Sensors | Accelerometer, ambient light sensor, optical heart sensor | Accelerometer, ambient light sensor, geomagnetic sensor, barometric altimeter, gyroscope, BioTracker PPG 4.0 biometric sensor |
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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, 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 GTR 4 |
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Wireless Interface | Bluetooth | Wi-Fi, Bluetooth 5.0 BLE |
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Connectors | USB | - |
DISPLAY | Polar Unite | Amazfit GTR 4 |
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Type | IPS - colour | AMOLED - colour |
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Resolution | 240 x 204 pixels | 466 x 466 pixels |
Screen Size | - | 1.43" |
Pixel Density | - | 326 ppi |
Screen Protection | - | Fingerprint-resistant coating, tempered glass, anti-glare bezel |
Always On Display (AOD) | - | Yes |
INPUT DEVICE | Polar Unite | Amazfit GTR 4 |
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Type | Touch sensitive screen | Touch sensitive screen, push buttons |
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CASE | Polar Unite | Amazfit GTR 4 |
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Case Shape | Round | Circular |
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Case Back | - | Polycarbonate |
Case Details | - | Aluminium alloy |
BAND | Polar Unite | Amazfit GTR 4 |
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Band Type | Band | Strap |
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Band Size | S/L | - |
Band Width | 20 mm | 22 mm |
Fits Wrist with Circumference | 130-210 mm | 150-215 mm |
Changeable | Yes | Yes |
Clasp Type | Snap & slip | Pin buckle |
Band Material | Silicone | Fluoroelastomer |
Band Colour | Black | Blue | Pink | White | Superspeed black | Vintage brown leather |
STORAGE | Polar Unite | Amazfit GTR 4 |
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User Memory | - | 2.3 GB |
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BATTERY | Polar Unite | Amazfit GTR 4 |
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Technology | Lithium polymer | - |
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Capacity | 174 mAh | 475 mAh |
Battery Life Details | Watch mode + HR - up to 4 days Training mode + HR - up to 50 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 Unite | Amazfit GTR 4 |
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Included Accessories | Charging/data cable | Magnetic charging cable |
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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 |