In depth comparison and review of Garmin Legacy Hero Series First Avenger and Polar Grit X. 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 | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Product Type | Sport watch | Sport watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS, Android |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Width | 45.1 mm | - |
| Height | 45.1 mm | - |
| Depth | 12.8 mm | - |
| Weight | 50.5 g | - |
| Body Details | - | With band: 64 g Case only: 44 g |
| Body Material | Stainless steel, fibre-reinforced polymer | Stainless steel |
| Protection | Water-resistant | Waterproof |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Sensors | Accelerometer, thermometre, altimeter, gyro sensor, electromagnetic compass, optical heart sensor, Pulse Ox sensor | Digital compass, barometer, altimeter, heart rate |
|---|---|---|
| Tracking Data | Distance, time, calories burned, sleep activity, heart rate, steps taken, floors climbed, blood oxygen saturation, stress level, menstrual cycle, breathing rate, hydration | Distance, speed, calories burned, activity, heart rate, steps taken, pace, sleep stages, cadence, running power, swimming metrics, running index |
| Goal Setting | Yes | Yes |
| Features | Music remote handling, find phone function, idle alert, HR zones, Move IQ, Garmin Connect compatible, Find my Device, store & play music, rejecting a call, Garmin Elevate, TrueUp, Body Battery, animated workouts | 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 |
| Notifications | SMS, incoming calls | SMS, Email, incoming calls |
| Vibrating Alert | - | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo receiver | GPS/GLONASS/Galileo/QZSS receiver |
| Payment Technology | Garmin Pay | - |
| CONNECTIVITY | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Wireless Interface | Bluetooth, Wi-Fi, NFC, ANT+ | Bluetooth |
|---|
| DISPLAY | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Type | Memory-in-Pixel LCD - colour | Colour |
|---|---|---|
| Resolution | 260 x 260 pixels | 240 x 240 pixels |
| Screen Size | 1.3" | 1.2" |
| Screen Protection | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass (scratch resistant glass) |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Type | Touch sensitive screen, touch buttons | Touch sensitive screen |
|---|
| CASE | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Case Size | 45 mm | - |
|---|---|---|
| Crystal Type | - | Laminated Corning Gorilla Glass |
| Case Shape | Round | Round |
| Bezel | Brushed stainless steel | Stainless steel |
| Case Back | Polymer | - |
| Case Details | Silver / midnight blue | White/silver | Black DLC | Silver |
| BAND | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | - | S |
| Band Width | 22 mm | 22 mm |
| Fits Wrist with Circumference | 135-200 mm | 130-190 mm |
| Changeable | - | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Tactical leather | Silicone |
| Band Colour | Brown | White | Black | Green |
| BATTERY | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Capacity | - | 346 mAh |
| Battery Life | 8 day(s) | 7 day(s) |
| Battery Life Details | Smartwatch mode - up to 8 days GPS mode - up to 18 hour(s) Smartwatch with music mode - up to 7.5 hour(s) GPS with Music mode - up to 6 hour(s) |
Watch mode - up to 7 days Training mode - up to 40 hour(s) |
| Rechargeable Battery | Yes | Yes |
| MISCELLANEOUS | Garmin Legacy Hero Series First Avenger | Polar Grit X |
|---|
| Included Accessories | Charging/data cable | USB charging cable |
|---|---|---|
| Preloaded Software | Garmin Pay, Garmion Connect IQ | - |
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | 60 °C | 50 °C |
| Min Operating Temperature | -20 °C | -20 °C |
| Warranty | - | 2-year warranty |
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