In depth comparison and review of Polar Grit X and Fitbit Sense. 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 | Fitbit Sense |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | Android 7.0 (Nougat) or later, iOS 12.2 or later |
| Activity/Sport | Multisport | - |
| Wearing Style | Watch style | Watch style |
| Audio Input | - | Microphone |
| Audio Output | - | Speaker |
| Width | - | 40.38 mm |
| Height | - | 40.38 mm |
| Depth | - | 12.45 mm |
| Body Details | With band: 64 g Case only: 44 g |
- |
| Body Material | Stainless steel | Stainless steel, aluminium |
| Protection | Waterproof | Water-resistant |
| Clock Display | Yes | Yes |
| FEATURES | Polar Grit X | Fitbit Sense |
|---|
| Sensors | Digital compass, barometer, altimeter, heart rate | Ambient light sensor, altimeter, gyro sensor, 3-axis accelerometer, temperature, optical heart sensor, electrodermal activity (EDA) sensor |
|---|---|---|
| Tracking Data | Distance, speed, calories burned, activity, heart rate, steps taken, pace, sleep stages, cadence, running power, swimming metrics, running index | Distance, calories burned, activity, sleep activity, heart rate, steps taken, skin temperature, sleep stages, stress level, menstrual cycle, ECG |
| 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 | Music remote handling, HR zones, breathing training function |
| Notifications | SMS, Email, incoming calls | Missed calls, calendar, SMS, social apps |
| Vibrating Alert | Yes | Yes |
| Feedback Type | Vibration alert, visual interface | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/QZSS receiver | GPS/GLONASS receiver |
| Payment Technology | - | FitBit Pay |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Google Assistant, Alexa |
| CONNECTIVITY | Polar Grit X | Fitbit Sense |
|---|
| Wireless Interface | Bluetooth | IEEE 802.11b/g/n, NFC, Bluetooth 5.0 |
|---|
| DISPLAY | Polar Grit X | Fitbit Sense |
|---|
| Type | Colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 240 pixels | - |
| Screen Size | 1.2" | - |
| Screen Protection | Corning Gorilla Glass (scratch resistant glass) | Corning Gorilla Glass 3 (scratch resistant glass) |
| Always On Display (AOD) | Yes | Yes |
| INPUT DEVICE | Polar Grit X | Fitbit Sense |
|---|
| Type | Touch sensitive screen | Touch sensitive screen |
|---|
| CASE | Polar Grit X | Fitbit Sense |
|---|
| Crystal Type | Laminated Corning Gorilla Glass | - |
|---|---|---|
| Case Shape | Round | Square |
| Bezel | Stainless steel | - |
| Case Details | White/silver | Black DLC | Silver | Silver stainless steel | Graphite stainless steel | Soft gold stainless steel |
| BAND | Polar Grit X | Fitbit Sense |
|---|
| Band Type | Band | Band |
|---|---|---|
| Band Size | S | S/L |
| Band Width | 22 mm | - |
| Fits Wrist with Circumference | 130-190 mm | 140-220 mm |
| Changeable | Yes | Yes |
| Clasp Type | Buckle | Buckle |
| Band Material | Silicone | Silicone |
| Band Colour | White | Black | Green | Sage grey | Carbon | Lunar white |
| BATTERY | Polar Grit X | Fitbit Sense |
|---|
| Technology | Lithium polymer | Lithium polymer |
|---|---|---|
| Capacity | 346 mAh | - |
| Battery Life | 7 day(s) | 6 day(s) |
| Battery Life Details | Watch mode - up to 7 days Training mode - up to 40 hour(s) |
Typical usage - up to 6 days GPS mode - up to 12 hour(s) |
| Rechargeable Battery | Yes | Yes |
| MISCELLANEOUS | Polar Grit X | Fitbit Sense |
|---|
| Included Accessories | USB charging cable | Charging cable, 2 wristbands (S+L) |
|---|---|---|
| Preloaded Software | - | FitBit Pay |
| Compliant Standards | MIL-STD 810G | - |
| Max Depth of Water Resistance | 100 m | 50 m |
| Max Operating Temperature | 50 °C | 45 °C |
| Min Operating Temperature | -20 °C | -10 °C |
| Warranty | 2-year warranty | - |
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