In depth comparison and review of Apple Watch Series 2 and Xiaomi Watch S1. 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 2 | Xiaomi Watch S1 |
|---|
| Product Type | Smart watch | Smart watch |
|---|---|---|
| Operating System | WatchOS 3 | - |
| Supported Host Device OS | iOS 10 or later | 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 | 33.3 mm | 46.5 mm |
| Height | 38.6 mm | 46.5 mm |
| Depth | 11.4 mm | 11 mm |
| Weight | 28.2 g | 52 g |
| Body Material | Aluminium | Stainless steel |
| Protection | Waterproof | Water-resistant |
| Colours | Space black | Silver | - |
| Clock Display | Yes | Yes |
| FEATURES | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Sensors | Accelerometer, ambient light sensor, gyro sensor, heart rate | Accelerometer, ambient light sensor, barometer, gyro sensor, geomagnetic sensor, pulse oximeter, optical heart sensor |
|---|---|---|
| Tracking Data | Distance, time, calories burned, activity, heart rate, steps taken | Distance, calories burned, activity, sleep activity, heart rate, steps taken, blood oxygen saturation, stress level |
| Goal Setting | Yes | Yes |
| Features | Call handling, Retina Display technology | Call handling, automatic exercise recognition, breathing training function |
| Notifications | Calendar, SMS, Email | SMS, Email, social apps, incoming calls |
| Vibrating Alert | Yes | - |
| Feedback Type | - | Vibration alert, visual interface |
| Navigation (GPS) | GPS/GLONASS receiver | GPS/GLONASS/Galileo/BeiDou/QZSS receiver |
| Internet of Things (IoT) Compatible | - | Yes |
| IoT Intelligent Assistant | - | Alexa built-in |
| IoT Voice Controlled | - | Direct |
| CONNECTIVITY | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Wireless Interface | IEEE 802.11b/g/n, Bluetooth 4.0 | IEEE 802.11b/g/n, NFC, Bluetooth 5.2 |
|---|
| DISPLAY | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Type | OLED - colour | AMOLED - colour |
|---|---|---|
| Resolution | 272 x 340 pixels | 466 x 466 pixels |
| Screen Size | - | 1.43" |
| Pixel Density | - | 326 ppi |
| Screen Protection | Ion-X glass | Sapphire glass |
| Always On Display (AOD) | - | Yes |
| INPUT DEVICE | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Type | Touch sensitive screen (Force Touch) | Touch sensitive screen, push buttons |
|---|
| CASE | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Case Size | 38 mm | 46 mm |
|---|---|---|
| Case Shape | - | Round |
| Case Back | Ceramic back | - |
| Case Details | Silver aluminium | Stainless steel | Rose gold aluminium | Gold aluminium | Space grey aluminium | Space black stainless steel | Silver | Black |
| Crown Type | Digital | - |
| BAND | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Band Type | Sport band | Strap |
|---|---|---|
| Band Size | S/M/L | - |
| Fits Wrist with Circumference | 130-200 mm | - |
| Changeable | - | Yes |
| Clasp Type | Pin-and-tuck | Buckle |
| Band Material | Fluoroelastomer | Calf leather |
| Band Colour | White | Black | Pink sand | Concrete | Silver | Midnight blue | Pearl | Light pink/midnight blue | Yellow/light grey | Saddle brown | Space black | Brown | Black |
| CPU | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Manufacturer | Apple | - |
|---|---|---|
| CPU Type | S2 | - |
| BATTERY | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Technology | Lithium Ion | Lithium polymer |
|---|---|---|
| Capacity | - | 470 mAh |
| Battery Life | 18 hours | - |
| Battery Life Details | - | Power saving mode - up to 24 days Typical usage - up to 12 days |
| Rechargeable Battery | - | Yes |
| Wireless Charging | - | Yes |
| MISCELLANEOUS | Apple Watch Series 2 | Xiaomi Watch S1 |
|---|
| Included Accessories | Power adapter, magnetic charging cable | USB cable, wireless charging dock, fluororubber watch strap (grey) |
|---|---|---|
| Preloaded Software | Siri | - |
| SAR Value | 0.056 W/kg (head), 0.049 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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