We have a new twist for the smart watches of Xiaomi, which in addition to presenting their new Xiaomi 15 and the Mi Pad 7 has also renewed these devices with the presentation of the new Xiaomi Watch S4.
These devices slightly renew the design of their predecessors, but also include interesting improvements that aspire to turn them into a reference for their options in health and monitoring of physical activity.
Xiaomi Watch S4 Technical Card
Xiaomi Watch S4 |
|
---|---|
Dimensions and weight |
47.3 x 47.3 x 12 mm 44.5 grams |
belt |
Standard pin 135/140-205/210 mm, according to version |
screen |
1.43 inches circular AMOLED Resolution 466 x 466 pixels 326 PPP 60 Hz Global brightness: 1,500 nits Maximum brightness: 2,200 nits |
processor |
N/D |
RAM |
N/D |
Internal storage |
N/D |
endurance |
-10ºC / 45ºC 5 atm |
connectivity |
Bluetooth 5.3 NFC esim (optional) |
compatibility |
Android 8.0 or higher iOS 12.0 or higher |
BATTERY |
486 mAh Magnetic load |
Sensors |
Heart rate SPO2 Accelerometer Gyroscope Geomagnetic Barometric pressure Environmental Light |
GeoPositioning |
Integrated GPS chip Beidou, GPS, Glonass, Galileo, QZSS |
Operating system |
Hyperos 2 |
OTHERS |
2x microphone Speaker +150 Sports modes Rotating crown Water resistance – 5 atm |
PRICE |
Xiaomi Watch S4, Bluetooth version, Advanced Professional Sports Mode, Quick Change 2.0, Amoled 1.43 inch circular, heart rate and sleep, silver monitor, silver
* Some price may have changed from the last review
A modest evolution
The new smart watch It keeps intact the inheritance of its predecessorsthe Watch S3. That shows for example in a design that is almost a tracing of those, but that provides a clear difference: the button on the right side is now more prominent, less “flat.”


Xiaomi has even launched these watches with the same colors and finishes, and here one of the outstanding features is the rotating bezel, which allows access to the clock options in a simple way.
The new model is also governed by Hyperos 2the second iteration of an operating system that among other things allows us to control home automation and even connected cars, although that option is more oriented to China, where Xiaomi sells its SU7 success.
These watches also allow gesture detection such as fingers To perform some home automation operations such as turning on the fan or light, for example.
It is possible to answer calls thanks to the Bluetooth connectivity and the speaker and microphone set integrated into the clock. That capacity is even more enhanced in the ESIM version of the device, which prevents us from having to have the mobile always associated with the clock.
One more hardware … brilliant
Details about the processor used by Xiaomi are not known at the moment on this device or the amount of RAM or available storage, but there is good news in the case of the screen.


In fact, we pass from the 600 peak nits of the version prior to screens that They can reach 2,200 nits (The typical brightness is 1,500 Nits), which will allow to have optimal visibility even outdoors with a lot of sunlight. We continue with AMOLED panels of 1.43 “and 466×466 resolution pixels.
The box is 47 millimeters in diameter and 12 millimeters thick, and the construction is based on aluminum except in the bezel, made of stainless steel.
The 486 mAh battery is loaded with a magnetic system, and according to Xiaomi Autonomy can reach 15 days with normal use and up to five days with the AOD mode activated. In the ESIM model – it is not clear if it will reach the European market – that autonomy is reduced to seven and three days respectively.
We have Wi-Fi and Bluetooth 5.3 connectivity, in addition to NFC and GPS. Water resistance is also guaranteed: it is capable of supporting up to 5 atm of pressure.
Watch S4 sensors allow, as in the previous model, measure heart rate, blood oxygen level and even stress. These watches are capable of monitoring our physical activity in more than 150 different sports, although There is a special focus for those who run. There is even a route planning mode with an AI system.
Xiaomi Watch S4, Bluetooth version, Advanced Professional Sports Mode, Quick Change 2.0, Amoled 1.43 inch circular, heart rate and sleep, silver monitor, silver
* Some price may have changed from the last review
Prices and versions of the Xiaomi Watch S4
The new Xiaomi Watch S4 have a price of 159.99 euros. They are already available in Spain.