Explore
1
Year
Warranty
By Xiaomi
Product Description
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*Xiaomi Smart Hub is available only when connected to Xiaomi smartphones that support Xiaomi HyperOS 2.
*The data of battery life is based on typical usage mode, tested by Xiaomi Internal Labs. Actual results may vary.
*This product and its features are not designed for medical purposes, and are not intended to predict, diagnose, prevent, or cure any disease.
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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.
*Display refresh rate may vary across different interfaces. Please refer to the actual usage scenario.
*The HBM brightness is the maximum brightness when the entire screen lights up. Peak brightness is the highest brightness achieved when only a specific part of the screen lights up.
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.
5 minutes of fast charging delivers 2 days of usage
Charge your watch while showering or brushing your teeth.
*Battery life data is based on typical usage mode and comes from Xiaomi Internal Labs. Actual results may vary.
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Rotating crown
New interactive experience
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.
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Interchangeable accessories
Trendy and fully customisable
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.
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Health at a glance
One tap for better wellness
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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%*.
*Data comes from Xiaomi Internal Labs. The average accuracy is up to 98% in scenarios such as sitting, office reading, treadmill running, and outdoor running, walking and cycling. In real-world usage, accuracy may vary due to individual differences, usage habits and environmental factors.
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*The features of all-day blood oxygen saturation monitoring, all-day stress monitoring, and all-day advanced sleep monitoring need to be manually turned on. For more details about the monitoring frequency and principle, please refer to the description in the app.
150+ sports modes
Ideal for all sorts of activities
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Personal running coach on your wrist
Perfect for your training
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.
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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.
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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.
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Professional skiing mode
Professional skiing mode records your distance, time, average speed of each glide and turn, and more in the Mi Fitness app.
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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*.
*Fall detection while skiing and emergency calls must be enabled and set up on the safety settings page in any skiing mode. The emergency call feature requires the watch to be connected to the Mi Fitness app. The emergency contact information needs to be set in advance.
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.
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A smart, connected lifestyle
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Xiaomi Smart Hub*
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Seamless interconnectivity
Remote photo-taking, find my phone, earphone settings*, and more. It can also control Xiaomi Home devices*, making smart wearables and home life more intelligently interconnected.
*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.
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.
*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.
*Gesture control features are limited depending on factors such as device model, system and software version. Please refer to the information below for more details.
Convenient NFC payment
For contactless and cashless payments, simply tap your Xiaomi Watch S4 against a payment terminal*. Now supporting Mastercard® and Visa®.
*Use of NFC requires a wireless service plan. This service plan may be subject to certain restrictions of use on switching service providers and roaming (even after contract expiration). NFC cashless payments are only accepted at Mastercard® and Visa® supported payment terminals. Mastercard® and Visa® payment availability and NFC availability may vary by region. Please go to https://www.mi.com/global/support/nfc-bank for more details and contact your issuing bank for more information.
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Notes:
*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.
