Display
- Amazfit Active 2 Premium Round
- 466 × 466 pixels; 353 ppi
- Xiaomi Watch S4
- 466 × 466 pixels; 326 ppi
Wearable comparison
Amazfit Active 2 Premium Round vs Xiaomi Watch S4
Compare battery life, health tracking, display and fit.
01Selected  Amazfit Active 2 Premium Round
KSh 22,000In Stock | 02  Xiaomi Watch S4
KSh 21,940In Stock |
|---|
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Amazfit GTR 3 ProKSh 20,000
AmazFit BalanceKSh 22,000
Amazfit Helio StrapKSh 22,000
Amazfit Active MaxKSh 24,000
Samsung Galaxy Watch 6KSh 22,500
Samsung Galaxy Watch 6 ClassicKSh 22,500
Samsung Galaxy Watch 7KSh 22,500
2 of 4 products
Our quick verdict
The Xiaomi Watch S4 lasts longer between charges (15 days typical) and has a sturdier aluminium build, while the Amazfit Active 2 Premium Round is lighter to wear all day.
Software
- Amazfit Active 2 Premium Round
- Runs Zepp OS
- Xiaomi Watch S4
- Runs Xiaomi HyperOS 2
Capacity
- Amazfit Active 2 Premium Round
- 270 mAh battery capacity
- Xiaomi Watch S4
- 486 mAh battery capacity
Portability
- Amazfit Active 2 Premium Round
- 31.65 g
- Xiaomi Watch S4
- About 44.5 g
Connections
- Amazfit Active 2 Premium Round
- Bluetooth 5.2
- Xiaomi Watch S4
- Bluetooth 5.3
Key differences
The main differences to help you choose.
Amazfit Active 2 Premium Round
- Lighter: 31.65 g (vs about 44.5 g).
- Slimmer: 9.9 mm thick (vs 12 mm).
- Charging: Magnetic charging head.
Xiaomi Watch S4
- Longer battery life: up to 15 days in typical use (vs 10).
- Bigger battery: 486 mAh (vs 270 mAh).
- Aluminium case (vs plastic case).
- Charging: 2-pin magnetic charging dock.
What matters most to you?
6 priorities selected.
| Priority | Amazfit Active 2 Premium Round | Xiaomi Watch S4 |
|---|---|---|
| Battery life | 270 mAh battery | 486 mAh battery |
| Portability | 31.65 g | About 44.5 g |
| Display | 1.32-inch OLED display, 353 ppi | 1.43-inch OLED display, 60 Hz, 326 ppi |
| Software | Zepp OS | Xiaomi HyperOS 2 |
| Connections | Bluetooth 5.2 | Bluetooth 5.3 |
| Sensors | BioTracker PPG, accelerometer | Heart-rate and blood-oxygen sensor, accelerometer |
| Sleep tracking | Sleep HRV, sleep stages including REM | Sleep tracking |
| Charging | Magnetic charging head | 2-pin magnetic charging dock |
| Microphone | Supported | 2 microphones |
| Positioning / GNSS | 5 satellite positioning systems, circularly polarized antenna | GPS, galileo |
| Health & wellness features | 24-hour heart rate, SpO₂ and stress | Heart rate, blood oxygen |
| Third-party fitness apps | Strava, adidas Running | Health Connect, strava |
| Controls / buttons | Two physical buttons and touchscreen | Rotating crown and side button |
| Wrist size | 150–210 mm | 140–210 mm (black, silver), 135–210 mm (rainbow) |
Tick a topic above to see how each product answers it.
Detailed comparison
Explore the full specifications, section by section.
These products have the same published specifications.
Similarities
- Both are water resistant to 50 m.
- Both take calls over Bluetooth.
- Both have OLED displays.
- Both have similar screen sizes (1.32 and 1.43 inches).
- Both connect over Bluetooth.
In summary
For most buyers the Xiaomi Watch S4 is the better buy; the Amazfit Active 2 Premium Round makes sense if you want a lighter watch for all-day wear.
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