Dial up your style

• 1.43" AMOLED display with exceptional brightness
• Upgraded interchangeable bezel design
• Classic rotating crown for intuitive interaction
• Seamless device management with Xiaomi Smart Hub
• One-tap health insights and 150+ sports modes
• Up to 15 days of battery life

Dazzling display Outstanding clarity

Featuring a 1.43-inch AMOLED large display that delivers clear and smooth visuals, as well as an astounding HBM brightness of up to 1500nits.

• 326 PPI
• 60Hz Refresh rate
• 1500nits HBM brightness
• 2200nits Peak brightness
• Moisture-resistant touch control: New algorithm prevents accidental operations caused by water droplets.

Up to 15 days of battery life

A long battery life of 15 days ensures more than 2 weeks of use, so there's no need to bring your watch charger for short-term trips.

Rotating crown

An upgraded rotating crown delivers a refined tactile experience. Rotate for quick access to widgets and message previews for improved reading efficiency.

Sleek design with exceptional craftsmanship

Exquisite aluminium alloy frame with a stainless steel-like high-gloss texture produced through a PVD process.

Interchangeable accessories

Xiaomi Watch S4 draws inspiration from traditional watches and offers a variety of iconic, trendy interchangeable bezels crafted from quality materials showcasing distinct, creative styles.

One-tap health insights

Monitors heart rate, stress, blood oxygen, and sleep. A micro-physical examination report is generated in around 60 seconds.

Breathing exercise

Includes new breathing exercises, including relax, concentrate, take a nap, and sleep soundly.

High-precision sensing module, 24/7 health protection

The combination of a high-precision heart rate monitoring module and self-developed heart rate algorithm improves the accuracy of heart rate monitoring on the watch to 98%*.

L1+L5 dual-frequency GNSS of five satellite positioning systems

The independent dual-frequency GNSS chip offers precise positioning via five major satellite systems to quickly and accurately record outdoor activities.

On-wrist running courses

From beginners, fat loss and weight loss, to improving cardiopulmonary function and endurance, there are professional courses and scientific training to help you continue to advance.

Running form recognition

Automatically identify key running posture metrics like vertical ratio, vertical amplitude, and ground contact time to offer professional tips for better workouts.

Professional skiing mode

Professional skiing mode records your distance, time, average speed of each glide and turn, and more in the Mi Fitness app.

Fall detection for safety

Now supports fall detection while skiing. If no response is detected within 60 seconds, the system will automatically call your emergency contact.

Health data at your fingertips

With Xiaomi's independently developed algorithm and Mi Fitness app, Xiaomi Watch S4 can monitor your health with greater accuracy. Now supporting Health Connect and popular workout apps like Strava and Suunto, it brings you even more flexibility and convenience.

New quick gestures, All it takes is a snap of your fingers

Customisable gestures control the watch's native functions, including rejecting and ignoring calls or notifications, taking photos remotely, opening the weather app, and more.

Convenient NFC payment

For contactless and cashless payments, simply tap your Xiaomi Watch S4 against a payment terminal. Now supporting Mastercard® and Visa®.

*Comes with a Silver, Black, or Rainbow bezel and strap kit as standard. Other bezel and strap kits must be purchased separately. The color of the accessories displayed is for reference only, the color being sold may vary depending on region, please refer to the local availability.  
*The watch must be kept connected to the smartphone's Bluetooth. Voice calls from third-party apps are not currently supported.  
*Some functions (including but not limited to call reminders, notification reminders, etc.) require the phone app to run in the background and stay connected with the watch. For specific instructions, please refer to the prompts in the app.  
*A gap exists between the bezel and watch body due to the detachable structural design. Users should clean the sweat and dirt in the bezel after intense exercise to prevent excessive salt buildup, as this may affect the installation and use of the bezel.  
*This product and its features are not designed for medical purposes or intended to predict, diagnose, prevent, or cure any disease.  
*Download more amazing watch faces from the Mi Fitness app. Actual watch face effects may differ from the images on this page. Please refer to the actual watch faces available in the Mi Fitness app.  
*When customizing the watch face, animations, or sound effects, please follow the user manual and align components correctly with the marked positions for activation. These features are not available in Do Not Disturb mode. Some watch faces shown in the images are exclusive to the corresponding bezel and cannot be acquired from Watch Face Market.  
*Fall detection while skiing and emergency calling must be enabled and set up on the safety settings page of any skiing mode. The emergency call feature requires the watch to be connected to the Mi Fitness app.  
*The watch may not be able to detect all falls and may mistake high-impact activity as falls, triggering the alarm and initiating an emergency call. If a fall does not occur, the user can tap the "I'm fine" box on the "Alarm" page to disable the function. When a user is wearing the watch and it detects a fall, the alarm will only be triggered after 20 seconds if the user doesn't move. The watch will initiate an emergency call if the user fails to operate the watch 60 seconds after the alarm is triggered. The watch must be connected to the app to make emergency calls and send text messages. If you connect the watch to a phone of another brand, the text message will not be sent due to system limitations.  
*To use the Xiaomi Smart Hub, the watch needs to be connected to a Xiaomi smartphone or pad supporting the latest version of Xiaomi HyperOS 2 and running the latest version of the Mi Fitness app and version 10.4 or above of the Xiaomi Home app. *Xiaomi Home devices can be controlled only when connected to the Xiaomi 15 Ultra via OTA available from March 2025, and to the Xiaomi 15 via OTA available from April 2025. More available models will be updated later on mi.com/global.  
*The function is initially compatible with Xiaomi Buds 5 Pro, Xiaomi Buds 4 Pro, Redmi Buds 6 Pro, Redmi Buds 6 and more. The availability of this feature on more earphone models is subject to the release schedule of corresponding smartphone OTA updates.  
*To activate gesture controls, the user must remain still with the forearm parallel to the chest, ensuring the screen is active and displayed on the dial or function page.  
*The gesture control function may not respond in certain scenarios, including but not limited to Sleep mode, Do Not Disturb mode, Power Saving mode, Always-On Display (AOD) watch face, or when sleep is detected. Specific usage scenarios are subject to the details outlined in the watch's gesture instructions.  
*15-day battery life with typical usage was tested with the watch fully charged, using factory default settings and a Rainbow dial, with high-precision sleep monitoring, sleep breathing quality monitoring, all-day stress monitoring and all-day blood oxygen monitoring turned off; daily every 10 minutes heart rate detection and message notifications (100 messages, 2 calls and 3 alarms a day) turned on, with the wrist raised to engage the screen 200 times a day; manually starting the app to sync data once a day; 15 minutes of Bluetooth calls every week; and recording exercise for 90 minutes each week.  
*All battery life testing data comes from Xiaomi Internal Labs. Battery life during actual use may vary due to usage habits, setup, operation and environment, and may differ from laboratory results.  
*The content and features (including the Spec page) shown on this page cannot be guaranteed to be available permanently. Adjustments may occur due to changes in copyright, or commercial or technical conditions. In the event of any changes occurring without individual notification, please refer to the actual content and features of the product.  
*Do not expose the smartwatch to strong magnetic fields as it may affect the functionality of the device. 

Specifications:

In the Box:

• Xiaomi Watch S4
• Magnetic charging dock
• User manual