In depth comparison and review of Polar Grit X and Amazfit T-Rex 2. 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 T-Rex 2 |
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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 | Multisport |
Wearing Style | Watch style | Watch style |
Width | - | 47.1 mm |
Height | - | 47.1 mm |
Depth | - | 13.65 mm |
Weight | - | 66.5 g |
Body Details | With band: 64 g Case only: 44 g |
- |
Body Material | Stainless steel | Polymer |
Protection | Waterproof | Shockproof, water-resistant, salt fog protection, freezeproof, heat-resistant |
Clock Display | Yes | Yes |
FEATURES | Polar Grit X | Amazfit T-Rex 2 |
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Sensors | Digital compass, barometer, altimeter, heart rate | Accelerometer, ambient light sensor, digital compass, gyro sensor, geomagnetic sensor, barometric altimeter, BioTracker PPG 3.0 biometric sensor |
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Tracking Data | Distance, speed, calories burned, activity, heart rate, steps taken, pace, sleep stages, cadence, running power, swimming metrics, running index | Distance, calories burned, sleep activity, heart rate, blood oxygen saturation, sleep stages, stress level, menstrual cycle |
Modes | - | 150+ 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 | Camera remote control, find phone function, flashlight, alarm, realtime location tracking, weather information, event reminders, PAI Health Assessment System, pomodoro timer, stopwatch timer, PeakBeats workout status algorithm, OxygenBeats algorithm, ExerSense algorithm, SomnusCare, Dual-band navigation |
Notifications | SMS, Email, incoming calls | Missed calls, calendar, incoming calls, applications |
Vibrating Alert | Yes | Yes |
Feedback Type | Vibration alert, visual interface | Vibration alert, visual interface |
Navigation (GPS) | GPS/GLONASS/Galileo/QZSS receiver | GPS receiver |
CONNECTIVITY | Polar Grit X | Amazfit T-Rex 2 |
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Wireless Interface | Bluetooth | Bluetooth 5.0 BLE |
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DISPLAY | Polar Grit X | Amazfit T-Rex 2 |
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Type | Colour | AMOLED - colour |
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Resolution | 240 x 240 pixels | 454 x 454 pixels |
Screen Size | 1.2" | 1.39" |
Pixel Density | - | 326 ppi |
Screen Protection | Corning Gorilla Glass (scratch resistant glass) | - |
Always On Display (AOD) | Yes | Yes |
INPUT DEVICE | Polar Grit X | Amazfit T-Rex 2 |
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Type | Touch sensitive screen | Touch sensitive screen, touch buttons |
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CASE | Polar Grit X | Amazfit T-Rex 2 |
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Crystal Type | Laminated Corning Gorilla Glass | - |
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Case Shape | Round | Round |
Bezel | Stainless steel | - |
Case Details | White/silver | Black DLC | Silver | Ember black | Wild green | Desert khaki | Astro black and gold |
BAND | Polar Grit X | Amazfit T-Rex 2 |
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Band Type | Band | Strap |
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Band Size | S | - |
Band Width | 22 mm | - |
Fits Wrist with Circumference | 130-190 mm | 140-205 mm |
Changeable | Yes | - |
Clasp Type | Buckle | Buckle |
Band Material | Silicone | Silicone |
Band Colour | White | Black | Green | Ember black | Wild green | Desert khaki |
BATTERY | Polar Grit X | Amazfit T-Rex 2 |
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Technology | Lithium polymer | - |
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Capacity | 346 mAh | 500 mAh |
Battery Life | 7 day(s) | 24 day(s) |
Battery Life Details | Watch mode - up to 7 days Training mode - up to 40 hour(s) |
Typical usage - up to 24 days Battery safe mode - up to 45 days Heavy usage - up to 10 days Accurate mode (with GPS) - up to 26 hour(s) Balanced mode (with GPS) - up to 50 hour(s) Power saving mode (with GPS) - up to 58 hour(s) Ultra-low temperature (with GPS) - up to 10 hour(s) Ultra-low temperature (without GPS) - up to 9 days |
Rechargeable Battery | Yes | Yes |
Recharge Time | - | 2 hour(s) |
MISCELLANEOUS | Polar Grit X | Amazfit T-Rex 2 |
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Included Accessories | USB charging cable | Magnetic charging dock |
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Preloaded Software | - | Zepp App |
Compliant Standards | MIL-STD 810G | MIL-STD 810G |
Max Depth of Water Resistance | 100 m | 100 m |
Max Operating Temperature | 50 °C | - |
Min Operating Temperature | -20 °C | - |
Warranty | 2-year warranty | 1-year warranty |