Xiaomi Watch S4 41mm vs Xiaomi Watch S4 15th Anniversary Edition comparison
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| key specs |
| Display Size | 41mm | 36mm |
| Strap Material | Milanese | - |
| Dial Shape | Round | Round |
| Ideal For | Unisex | Unisex |
| Compatible OS | - | Android 8.0 or above, iOS 12.0 or above |
| Display Type | - | AMOLED |
| general |
| Brand | Xiaomi | Xiaomi |
| Model | Watch S4 41mm | Watch S4 15th Anniversary Edition |
| Release date | September 24, 2025 | May 23, 2025 |
| Dial Shape | Round | Round |
| Strap Material | Milanese | - |
| Size | Regular | Regular |
| Touchscreen | 1.32 | 1.43 |
| Water Resistant | 5ATM | 5 ATM |
| Water Resistance Depth | 50 m | - |
| Usage | Regular | Regular |
| Dial Material | Stainless steel | - |
| Ideal For | Unisex | Unisex |
| Model Name | - | Xiaomi Watch S4 15th Anniversary Edition |
| Dial Colour | - | Black |
| Interchangeable Strap | - | Yes |
| dimensions |
| Width | 41.2 | 47.3 |
| Height | 41.2 | 47.3 |
| Diameter | 9.5 | - |
| Weight (g) | 32.00 | 44.50 |
| Thickness | - | 12 |
| product details |
| Sensor | Heart rate sensor (with blood oxygen sensor), Accelerometer, Gyroscope, Ambient light sensor, Electronic compass, Barometer sensor, Temperature sensor | Heart Rate Monitor, Stress, Sleep |
| Battery Type | 320mAh | 486mAh |
| Battery Life | 8 days | - |
| Compatible Device | - | Android and iOS |
| connectivity features |
| Call Function | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.3 |
| GPS | Yes | Yes |
| Wi-Fi | - | Yes |
| Other Connectivity Features | - | NFC, Galileo, Glonass, Beidou, QZSS |
| platform and storage features |
| Operating System | Xiaomi HyperOS 3 | HyperOS 2 |
| Compatible Operating System | - | Android 8.0 or above, iOS 12.0 or above |
| camera and display features |
| Display Resolution | 466 × 466 | 466 x 466 |
| Display Size | 41mm | 36mm |
| Other Display Features | 1500nits, 60Hz refresh rate | - |
| Display Type | - | AMOLED |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Heart Rate Monitor | Yes | Yes |
| Altimeter | Yes | - |
| Compass | Yes | - |
| Calendar | Yes | - |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | English |
| Calorie Count | - | Yes |
| audio and video features |
| Speaker | Yes | - |
| Microphone | Yes | - |
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