In depth comparison and review of Apple Watch Series 4 (GPS + Cellular) 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 | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | WatchOS 5 | - |
| Supported Host Device OS | iOS | iOS 10 or later, Android 6.0 (Marshmallow) or later |
| Activity/Sport | - | Multisport |
| Wearing Style | Watch style | Watch style |
| Audio Input | Microphone | Microphone |
| Audio Output | Speaker | Speaker |
| Width | 34 mm | - |
| Height | 40 mm | - |
| Depth | 10.7 mm | - |
| Weight | 39.8 g | - |
| Body Details | - | Case only: 36.3 g |
| Body Material | Stainless steel | Glass fibre reinforced polyamide |
| Protection | Waterproof | Water-resistant |
| Colours | - | Ocean blue | Moon white |
| Clock Display | Yes | Yes |
| FEATURES | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Sensors | Accelerometer, ambient light sensor, gyro sensor, barometric altimeter, optical heart sensor, electrical heart sensor | Accelerometer, ambient light sensor, barometer, SpO2 sensor, geomagnetic sensor, optical heart sensor, PPG sensor, gyroscope |
|---|---|---|
| Tracking Data | Distance, time, calories burned, activity, heart rate, steps taken, UV index, Air Quality index | 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 | Music remote handling, ECG accurate heart rate, listening to music, Retina Display technology, call alerts, automatic exercise recognition, Fall detection, Emergency SOS | 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 | Audio alert, vibration alert, visual interface | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS/Galileo/QZSS receiver | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Payment Technology | Apple Pay | - |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | Siri | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CELLULAR | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Technology | WCDMA (UMTS) / GSM | - |
|---|---|---|
| Mobile Broadband Generation | 4G | - |
| SIM Card Type | Electronic SIM card (e-SIM) | - |
| Messaging Services | SMS | - |
| Supported Mobile Messaging Services | SMS | - |
| CONNECTIVITY | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Wireless Interface | IEEE 802.11b/g/n, Bluetooth 5.0 | IEEE 802.11b/g/n, NFC, Bluetooth 5.2 |
|---|
| DISPLAY | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Type | LTPO OLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 324 x 394 pixels | 466 x 466 pixels |
| Screen Size | 1.57" | 1.43" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Sapphire glass | - |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Type | Touch sensitive screen (Force Touch) | Touch sensitive screen, push buttons |
|---|
| CASE | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Case Size | 40 mm | - |
|---|---|---|
| Case Shape | Rectangular | Round |
| Bezel | - | Metal |
| Case Back | Sapphire crystal and ceramic back | - |
| Case Details | Stainless steel | Space grey aluminium | Space black stainless steel | Silver aluminium | Gold aluminium | Gold stainless steel | Blue | Silver | Space black |
| Crown Type | Digital with haptic feedback | - |
| BAND | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Band Type | Milanese loop | Strap |
|---|---|---|
| Fits Wrist with Circumference | 130-180 mm | 160-220 mm |
| Changeable | - | Yes |
| Clasp Type | Magnetic closure | Buckle |
| Band Material | Steel mesh | TPU |
| Band Colour | White | Black | Pink sand | Space black | Gold | Seashell | Stone | Blue | White | Black |
| STORAGE | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Storage Capacity | 16 GB | - |
|---|
| CPU | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Manufacturer | Apple | - |
|---|---|---|
| CPU Type | S4 | - |
| Features | W3 Apple wireless chip | - |
| BATTERY | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Technology | Lithium Ion | - |
|---|---|---|
| Capacity | - | 470 mAh |
| Battery Life | 18 hours | 12 day(s) |
| Battery Life Details | - | 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) |
| Wireless Charging | Yes | - |
| MISCELLANEOUS | Apple Watch Series 4 (GPS + Cellular) | Xiaomi Watch S1 Active |
|---|
| Included Accessories | Power adapter, magnetic charging cable | Magnetic charging cable |
|---|---|---|
| Preloaded Software | Apple Pay | - |
| Compliant Standards | - | GB/T 30106-2013 |
| SAR Value | 0.27 W/kg (head), 0.26 W/kg (limb) | - |
| Max Depth of Water Resistance | 50 m | 50 m |
| Max Operating Temperature | - | 45 °C |
| Min Operating Temperature | - | -10 °C |
| Warranty | - | 2-year warranty |
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