In depth comparison and review of Polar Unite and Xiaomi Watch S1 Active. 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 Unite | Xiaomi Watch S1 Active |
|---|
| Product Type | Sport watch | Smart watch |
|---|---|---|
| Supported Host Device OS | iOS, Android | iOS 10 or later, Android 6.0 (Marshmallow) 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 | - | Case only: 36.3 g |
| Body Material | Fibreglass reinforced polymer | Glass fibre reinforced polyamide |
| Protection | Water-resistant | Water-resistant |
| Colours | - | Ocean blue | Moon white |
| Clock Display | Yes | Yes |
| FEATURES | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Sensors | Accelerometer, ambient light sensor, optical heart sensor | Accelerometer, ambient light sensor, barometer, SpO2 sensor, geomagnetic sensor, optical heart sensor, PPG sensor, gyroscope |
|---|---|---|
| Tracking Data | Distance, calories burned, activity, sleep activity, heart rate, steps taken | Distance, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, stress level |
| Modes | - | 117 fitness modes, 19 professional 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 | Call handling, find phone function, flashlight, automatic exercise recognition, breathing training function, music playback control, weather information, customisable watch faces, Health index, Women's health |
| Notifications | Calendar, SMS, Email | SMS, Email, social apps, incoming calls |
| Vibrating Alert | Yes | Yes |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | - | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Wireless Interface | Bluetooth | IEEE 802.11b/g/n, NFC, Bluetooth 5.2 |
|---|---|---|
| Connectors | USB | - |
| DISPLAY | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Type | IPS - colour | AMOLED - colour |
|---|---|---|
| Resolution | 240 x 204 pixels | 466 x 466 pixels |
| Screen Size | - | 1.43" |
| Pixel Density | - | 326 ppi |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Type | Touch sensitive screen | Touch sensitive screen, push buttons |
|---|
| CASE | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Case Shape | Round | Round |
|---|---|---|
| Bezel | - | Metal |
| Case Details | - | Blue | Silver | Space black |
| BAND | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Band Type | Band | Strap |
|---|---|---|
| Band Size | S/L | - |
| Band Width | 20 mm | - |
| Fits Wrist with Circumference | 130-210 mm | 160-220 mm |
| Changeable | Yes | Yes |
| Clasp Type | Snap & slip | Buckle |
| Band Material | Silicone | TPU |
| Band Colour | Black | Blue | Pink | White | Blue | White | Black |
| BATTERY | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Technology | Lithium polymer | - |
|---|---|---|
| Capacity | 174 mAh | 470 mAh |
| Battery Life | - | 12 day(s) |
| Battery Life Details | Watch mode + HR - up to 4 days Training mode + HR - up to 50 hour(s) |
Typical usage - up to 12 days Power saving mode - up to 24 days GPS mode - up to 30 hour(s) |
| Rechargeable Battery | Yes | Yes |
| Recharge Time | - | 2.5 hour(s) |
| MISCELLANEOUS | Polar Unite | Xiaomi Watch S1 Active |
|---|
| Included Accessories | Charging/data cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Polar Fitness Test, Polar Flow | - |
| Compliant Standards | - | GB/T 30106-2013 |
| Max Depth of Water Resistance | 30 m | 50 m |
| Max Operating Temperature | 50 °C | 45 °C |
| Min Operating Temperature | -10 °C | -10 °C |
| Warranty | 2-year warranty | 2-year warranty |
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