Xiaomi Smart Band 9 vs Xiaomi Watch S4
Compare specifications, current prices and availability. Choose up to four products from the same family.
Selected Item  Xiaomi Smart Band 9 Original price was: KSh 10,500.00.KSh 9,500.00Current price is: KSh 9,500.00.Buy now |
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Huawei Band 9KSh 8,000.00
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At a glance
Key specifications and important differences. Full details follow below.
| Feature | Xiaomi Smart Band 9 |  Xiaomi Watch S4 |
|---|---|---|
| Price | Original price was: KSh 10,500.00.KSh 9,500.00Current price is: KSh 9,500.00. | KSh 20,000.00 |
| Display | 1.62-inch AMOLED touchscreen | 1.43-inch AMOLED, 60 Hz |
| Battery capacity | 233 mAh nominal | 486 mAh |
| Water resistance | 5 ATM rated for suitable shallow-water activities | 5 ATM rated for suitable shallow-water activities |
| Positioning / GPS | — | Built-in GPS, Galileo, GLONASS, BeiDou and QZSS |
| Health & wellness features | Heart rate, blood oxygen, stress, cycle 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 and breathing-quality insights | Sleep monitoring supported |
| Sports / workout modes | More than 150 sports modes | More than 150 sports modes |
| Phone compatibility | Android 8.0 or later; iOS 12.0 or later | Android 8.0 or later; iOS 14.0 or later |
Full specifications
2 of 4 products
| Specification | Xiaomi Smart Band 9 | Xiaomi Watch S4 |
|---|---|---|
| Identity & design | ||
| Brand | Xiaomi | Xiaomi |
| Model | Xiaomi Smart Band 9 | Xiaomi Watch S4 |
| Announced | July 2024 | March 2025 (global model) |
| Dimensions | 46.53 × 21.63 × 10.95 mm (strap and protrusions excluded) | 47.3 × 47.3 × 12.0 mm (strap and protrusions excluded) |
| Weight | 15.8 g (strap excluded) | Approximately 44.5 g (strap excluded) |
| Build materials | Metal frame with TPU strap; finish varies by color | Aluminum-alloy frame with interchangeable bezel |
| Wrist size | 135–210 mm | Black/Silver: approximately 140–210 mm; Rainbow: approximately 135–210 mm |
| Strap / band | TPU strap | Fluororubber; Rainbow configuration also includes nylon strap |
| Controls / buttons | AMOLED touchscreen | Rotating crown, side control, interchangeable bezel interaction, and touchscreen |
| Display | ||
| Display | 1.62-inch AMOLED touchscreen | 1.43-inch AMOLED, 60 Hz |
| Screen resolution | 192 × 490 pixels | 466 × 466 pixels (~326 ppi) |
| Display features | Automatic brightness; adjustable up to 1,200 nits | Always-on display; up to 1,500 nits HBM |
| Memory & software | ||
| Operating system | — | Xiaomi HyperOS 2 |
| Connectivity | ||
| Bluetooth | Bluetooth Low Energy | Bluetooth 5.3 |
| NFC | — | Supported; availability varies by region |
| Positioning / GNSS | — | Built-in GPS, Galileo, GLONASS, BeiDou and QZSS |
| Health & fitness | ||
| Sensors | Accelerometer, gyroscope, optical heart-rate sensor, and ambient-light sensor | Heart-rate/blood-oxygen sensor, accelerometer, gyroscope, ambient-light sensor, electronic compass, barometer and Hall sensor |
| Health & wellness features | Heart rate, blood oxygen, stress, cycle 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 and breathing-quality insights | Sleep monitoring supported |
| Sports / workout modes | More than 150 sports modes | More than 150 sports modes |
| Smart features | ||
| Speaker | — | Built-in speaker |
| Microphone | — | Two built-in microphones |
| Battery & durability | ||
| Battery capacity | 233 mAh nominal | 486 mAh |
| Battery life | Up to 21 days typical use; actual life varies by settings and use | Up to 15 days typical use; actual life varies by settings and use |
| Charging | Magnetic charging; approximately 1 hour | 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 12.0 or later | Android 8.0 or later; iOS 14.0 or later |
| Companion app | Mi Fitness | Mi Fitness |
| Colors | Midnight Black, Glacier Silver, Mystic Rose, Arctic Blue, or Titan Gray | Black, Silver, or Rainbow depending on configuration |
| Additional specifications | ||
| Calling | — | Bluetooth calling when paired with a compatible phone; third-party app voice calls not supported |
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