
As a product line just launched, the price of Xiaomi Watch S4 smartwatch is still equivalent to Xiaomi Watch 2 introduced 1 year ago. So with this price, what is the better choice for users? Let’s find out in our article below.
1. Compare specifications of Xiaomi Watch S4 and Xiaomi Watch 2
First, to basically understand the differences between Xiaomi Watch S4 and Xiaomi Watch 2 Then observe the comparison of the specifications of this duo in the table below:
Parameter | Xiaomi Watch S4 | Xiaomi Watch 2 |
Watch face size | 47mm | 47.8mm |
Clock face | AMOLED 1.43 inches 466 x 466 pixels | AMOLED 1.43 inches 466 x 466 pixels |
Material | Aluminum frame Stainless steel borders Tempered glass clock face Silicon strap | Aluminum frame Tempered glass clock face Silicon strap |
Water resistance | 5ATM | 5ATM |
Device support | Android 8.0 and above iOS 12 and above | Android 8.0 and above |
Sensor | Heart rate sensor Accelerator Reunion Environmental light sensor Electronic Compass Air pressure sensor Hall sensor | Optical heart rate sensor Accelerator sensor Sensor Review Surrounding light sensor Electronic compass sensor Sensor Sensor |
Position | GPS (L1, L5) | Galileo | Glonass | Beidou | QZSS | Dual band: L1+L5 GPS | Galileo | Glonass | Beidou | QZSS |
Operating system | Hyperos 2.0 | Google Wear OS |
Battery | 486 mAh 15 days of use | 495 mAh 65 hours of use |
Through the comparison table above, customers must have basically grasped the differences between this Xiaomi smartwatch duo. For more details, let us compare each aspect of the product.

2. Compare design Xiaomi Watch S4 and Xiaomi Watch 2
Despite using the round face, each model follows different designs:
- Xiaomi Watch S4 is classic and can completely replace a suitable wrist watch even solemn occasions.
- Xiaomi Watch 2 has a more modern inspiration, creating dynamism but equally luxurious for the wearer.
The materials used of this smartwatch duo are equivalent to the alloy frame, silicon strap and 5ATM water resistance. However, the Xiaomi Watch S4 watch is heavier than the Watch 2 and has a more impressive screen switch knob. However, in general, the feeling of wearing this smartwatch duo is similar.

3. Compare the face of Xiaomi Watch 2 and Watch S4
Both lines of smart watches use the watch face AMOLED 1.43 inch with a resolution of 466 x 466 pixels For sharp visibility with impressive vivid colors. However, the generation of smart watches 2025 can reach the screen brightness up to 1200 nitmore impressive than 600 nit On Xiaomi Watch 2.
Having better screen brightness will ensure clear visibility in the sunny outdoor conditions. Both Xiaomi smart watches are also integrated with light sensor and help the watch face to change the screen brightness depending on the conditions. Users can also change a variety of different types of watches to fit the costumes and moods of each day.
Both Smartwatch models achieve smooth touch ability, contributing positively to the satisfaction for the wearer during the use of the machine.

4. Compare the operating system and processing performance
Xiaomi does not announce the chip used on Watch S4 watches, but the company said using chips Qualcomm Snapdragon W5+ Gen 1 For Watch 2. This is a high -end watch chip that is also used on Samsung high -end watches.
In addition, Watch 2 is also equipped with the operating system Google Wear OS – The operating system is considered to be the most optimal on the smart watch today, but only connects to Android phones. Meanwhile, Xiaomi Watch S4 uses the operating system Hyperos 2.0 Do Xiaomi develops, and supports both Android phones and iPhones.
The strength of the Xiaomi Watch 2 smartwatch is the ability to support wifi connection to be able to operate, while Watch S4 is required to constantly connect to the phone via Bluetooth to perform all the functions. In addition, Watch 2 also has its own memory that allows users to store music, install applications from Google’s store to increase the optimal experience.
Although both smart watches are equipped with microphones and external speakers, both Watch S4 and Watch 2 only supports normal calls, and with application calls that only notify missed calls. With Watch 2 customers can also use virtual assistants by voice to control the watch convenient.

5. Compare health and exercise tracking features
Regarding training and health tracking features, this Xiaomi smartwatch duo is similar. Both are equipped with the sensor system equivalent to the multi -satellite navigation system with dual band GPS.
Both are equipped with heart rate monitoring features, monitoring saturated oxygen concentrations in SPO2 blood, stress level, sleep monitoring, women’s cycle monitoring … with warnings when detecting abnormal health.
Xiaomi Watch 2 has the ability to track 160 sports, while Xiaomi Watch S4 can track 150 different subjects. Along with detailed data, the duo will help quite a lot for the wearer when practicing and warning in the situation of falling falls.

6. Compare battery capacity
Despite the better battery capacity of 495 mAh, Xiaomi Watch 2 has a maximum use time 65 hours. Meanwhile, with 486 mAh battery Xiaomi Watch S4 leads to the amount of use up to 15 days In basic mode, this is definitely the outstanding advantage of the 2025 watch line.
In return, Watch 2 has faster charging speed with charging time from 0 – 100% is 45 minutes, and Xiaomi Watch S4 takes 60 minutes.
CONCLUDE
According to the statistical data of websosanh.vn, the price of this watch duo is currently being distributed by the dealers as follows:
- Xiaomi Watch S4 smartwatch: Price 3,990,000 VND
- Xiaomi Watch 2 smartwatch: Price 3,890,000 VND
Thus, with the difference of only 100,000 VND, the Xiaomi Watch S4 watch offers a wearer with a more impressive appearance and more impressive use time. However, in terms of Xiaomi Watch 2 smart features, it brings more optimal satisfaction to users.
Therefore, depending on the needs that customers choose for themselves the right product, especially if you use iPhone, you should only use Watch S4 because Watch 2 does not support iPhone connection.