In depth comparison and review of Garmin Forerunner 45S 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 Forerunner 45S | 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 | 39.5 mm | - |
| Height | 39.5 mm | - |
| Depth | 11.4 mm | - |
| Weight | 32 g | - |
| Body Details | - | With band: 64 g Case only: 44 g |
| Body Material | - | Stainless steel |
| Protection | Waterproof | Waterproof |
| Clock Display | Yes | Yes |
| FEATURES | Garmin Forerunner 45S | Polar Grit X |
|---|
| Sensors | Accelerometer, heart rate | Digital compass, barometer, altimeter, heart rate |
|---|---|---|
| Tracking Data | Distance, time, speed, calories burned, sleep activity, heart rate, stress level | 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, HR zones, Move IQ, Garmin Connect compatible, Find my Device | 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 | Calendar, Email, social apps | SMS, Email, incoming calls |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/QZSS receiver |
| CONNECTIVITY | Garmin Forerunner 45S | Polar Grit X |
|---|
| Wireless Interface | Bluetooth, ANT+ | Bluetooth |
|---|
| DISPLAY | Garmin Forerunner 45S | Polar Grit X |
|---|
| Type | Memory-in-Pixel LCD - colour - transflective | Colour |
|---|---|---|
| Resolution | 208 x 208 pixels | 240 x 240 pixels |
| Screen Size | 1.04" | 1.2" |
| Screen Protection | - | Corning Gorilla Glass (scratch resistant glass) |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Garmin Forerunner 45S | Polar Grit X |
|---|
| Type | - | Touch sensitive screen |
|---|
| CASE | Garmin Forerunner 45S | Polar Grit X |
|---|
| Crystal Type | - | Laminated Corning Gorilla Glass |
|---|---|---|
| Case Shape | Round | Round |
| Bezel | - | Stainless steel |
| Case Details | White | Iris | Black | White/silver | Black DLC | Silver |
| BAND | Garmin Forerunner 45S | Polar Grit X |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | S | S |
| Band Width | - | 22 mm |
| Fits Wrist with Circumference | 124-185 mm | 130-190 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | White | Iris | Black | White | Black | Green |
| BATTERY | Garmin Forerunner 45S | Polar Grit X |
|---|
| Technology | - | Lithium polymer |
|---|---|---|
| Capacity | - | 346 mAh |
| Battery Life | - | 7 day(s) |
| Battery Life Details | GPS mode - up to 13 hour(s) Smartwatch mode - up to 7 days |
Watch mode - up to 7 days Training mode - up to 40 hour(s) |
| Rechargeable Battery | - | Yes |
| MISCELLANEOUS | Garmin Forerunner 45S | Polar Grit X |
|---|
| Included Accessories | Charging/data cable | USB charging cable |
|---|---|---|
| Compliant Standards | - | MIL-STD 810G |
| Max Depth of Water Resistance | 50 m | 100 m |
| Max Operating Temperature | - | 50 °C |
| Min Operating Temperature | - | -20 °C |
| Warranty | - | 2-year warranty |
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