Xiaomi Watch S4 vs Amazfit Active 2 Smartwatch
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General
| Country of Origin | China | |
| Brand | Xiaomi | Amazfit |
| Model Name | S4 | Active 2 |
| Series | Standard | |
| Sim | eSIM | |
| Ideal For | Men | Men, Women |
| Sales Package | Smartwatch, User Manual, Charger | Smart Watch, Magnetic Charging Cable, User Manual |
Design and Body
| Weight | 29.5 g | |
| Material | Stainless Steel and Polymer | |
| Strap | 20mm Silicon | |
| Shape | Circle | Circle |
| Water Resistant | Yes | Yes |
| Water Resistant Depth | 50 m | |
| Water Resistant Certificate | 5ATM | |
| Dust Proof | Yes |
Display
| Type | Color AMOLED | Color AMOLED |
| Touch | Yes | Yes |
| Size | 1.43 inches | 1.32 inches |
| Resolution | 466 x 466 pixels | 466 x 466 pixels |
| PPI | 461 ppi | 353 ppi |
| Ambient Light Sensor | Yes | |
| Always On Display | Yes | |
| Glass Type | 2.5D Tempered glass + Anti-fingerprint coating | |
| Features | 2220 Nits Brightness | 2000 Nits Brightness |
Connectivity
| Wi-Fi | Yes | |
| Voice Calling | Yes | |
| Bluetooth | Yes, 5.3 | Yes, 5.2 |
| Bluetooth Calling | Yes | |
| GPS | Yes | Yes |
Extra
| NFC | Yes | |
| Gyroscope | Yes | Yes |
| Voice Assistant | Yes | Yes, Zepp Flow |
| Inbuilt Microphone | Yes | Yes |
| Inbuilt Speaker | Yes | Yes |
| Extra Features | Multiple Sports Mode, Multiple Watch Faces | 160 Sports Modes, HRV Tracking, and Wild.AI Integration, Offline Maps |
Technical
| OS | HyperOS 2 | ZeppOS |
| Compatible OS | Android 8.0 or Above and iOS 12.0 OR Above | Android 7.0 and above, iOS 14.0 and above |
Battery
| Battery Capacity | 486 mAh | 270 mAh |
| Battery Type | Li-Poly | |
| Removable Battery | Non-Removable Battery | Non-Removable Battery |
| Battery Backup | 15 days | 10 days |
| Charging Time | 2 hours | |
| Wireless Charging | Yes |
Fitness Features and Sensors
| Heart Rate Monitor | Yes | Yes |
| SpO2 (Blood Oxygen) Monitor | Yes | Yes |
| Temperature Sensor | Yes | |
| Pedometer | Yes | Yes |
| Altimeter | Yes, Barometric | |
| Sleep Monitor | Yes | Yes |
| Reminder | Yes | Yes |
| Meters and Sensors | Accelerometer, Calorie Count, Step Count | Accelerometer, Step Count, BioTracker 6.0 PPG biosensor, Barometer |
| Extra Features | Alarm Clock, Stopwatch, Timer | Alarm Clock, Stopwatch, Timer |
Warranty
| Warranty | 1 year, Warranty on Product |
Discuss
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