Xiaomi Watch S4 vs Xiaomi Watch S3
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Xiaomi Watch S4 |  Xiaomi Watch S3 |
|---|---|---|
| Price | KSh 20,000.00 | KSh 18,000.00 |
| Display | 1.43-inch AMOLED, 60 Hz | 1.43-inch AMOLED |
| Battery capacity | 486 mAh | 486 mAh lithium-ion polymer |
| Water resistance | 5 ATM rated for suitable shallow-water activities | 5 ATM rated for suitable shallow-water activities |
| Operating system | Xiaomi HyperOS 2 | Xiaomi HyperOS |
| Positioning / GNSS | Built-in GPS, Galileo, GLONASS, BeiDou and QZSS | BeiDou, GPS, GLONASS, Galileo and QZSS |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing and activity tracking; wellness data is not intended for medical diagnosis | Heart rate, blood oxygen, stress, breathing and activity tracking; wellness data is not intended for medical diagnosis |
Full specifications
2 of 4 products
| Specification | Xiaomi Watch S4 | Xiaomi Watch S3 |
|---|---|---|
| Identity & design | ||
| Brand | Xiaomi | Xiaomi |
| Model | Xiaomi Watch S4 | Xiaomi Watch S3 (M2323W1) |
| Announced | March 2025 (global model) | October 2023 |
| Dimensions | 47.3 × 47.3 × 12.0 mm (strap and protrusions excluded) | 47 × 47 × 12 mm |
| Weight | Approximately 44.5 g (strap excluded) | 44 g (strap excluded) |
| Build materials | Aluminum-alloy frame with interchangeable bezel | Aluminum-alloy frame, stainless-steel interchangeable bezel, and Corning glass |
| Wrist size | Black/Silver: approximately 140–210 mm; Rainbow: approximately 135–210 mm | 140–210 mm |
| Strap / band | Fluororubber; Rainbow configuration also includes nylon strap | Fluororubber strap |
| Controls / buttons | Rotating crown, side control, interchangeable bezel interaction, and touchscreen | Rotating crown, side control, interchangeable bezel interaction, and touchscreen |
| Display | ||
| Display | 1.43-inch AMOLED, 60 Hz | 1.43-inch AMOLED |
| Screen resolution | 466 × 466 pixels (~326 ppi) | 466 × 466 pixels (~326 ppi) |
| Display features | Always-on display; up to 1,500 nits HBM | Always-on display supported |
| Performance & software | ||
| Operating system | Xiaomi HyperOS 2 | Xiaomi HyperOS |
| Connectivity | ||
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.2 |
| NFC | Supported; availability varies by region | Supported; availability varies by region |
| Positioning / GNSS | Built-in GPS, Galileo, GLONASS, BeiDou and QZSS | BeiDou, GPS, GLONASS, Galileo and QZSS |
| Audio & communication | ||
| Speaker | Built-in speaker | Built-in speaker |
| Microphone | Two built-in microphones | Built-in microphone |
| Calling | Bluetooth calling when paired with a compatible phone; third-party app voice calls not supported | Bluetooth calling when paired with a compatible phone |
| Sensors, health & fitness | ||
| Sensors | Heart-rate/blood-oxygen sensor, accelerometer, gyroscope, ambient-light sensor, electronic compass, barometer and Hall sensor | Heart-rate/blood-oxygen sensor, accelerometer, gyroscope, electronic compass, barometer, ambient-light sensor and Hall sensor |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing and activity tracking; wellness data is not intended for medical diagnosis | Heart rate, blood oxygen, stress, breathing and activity tracking; wellness data is not intended for medical diagnosis |
| Sleep tracking | Sleep monitoring supported | Sleep monitoring supported |
| Sports / workout modes | More than 150 sports modes | More than 150 sports modes |
| Battery & durability | ||
| Battery capacity | 486 mAh | 486 mAh lithium-ion polymer |
| Battery life | Up to 15 days typical use; actual life varies by settings and use | Up to 15 days typical use with Android, 14.5 days with iOS, or 5 days with always-on display |
| Charging | 2-pin magnetic charging dock | 2-pin magnetic charging dock |
| Water resistance | 5 ATM rated for suitable shallow-water activities | 5 ATM rated for suitable shallow-water activities |
| Compatibility | ||
| Phone compatibility | Android 8.0 or later; iOS 14.0 or later | Android 8.0 or later; iOS 12.0 or later |
| Companion app | Mi Fitness | Mi Fitness |
| Colors | Black, Silver, or Rainbow depending on configuration | Black or Silver; bezel and strap options vary by market |
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