Technical sheet

Xiaomi Watch S4 smartwatch

Name: Xiaomi Watch S4 smartwatch
Brand: Xiaomi
SKU: 142785666
Price: 141.99 EUR
Availability: InStock
Rating: 4 (1 reviews)

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1 Reviews

4 Questions

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Long

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Features of Xiaomi Watch S4

Product description of Xiaomi Watch S4 smartwatch

Description summary

Introducing the XIAOMI Watch S4: Elevate your style and wellness with this sophisticated smartwatch. Featuring a revolutionary interchangeable bezel design and hundreds of watch faces, it´s the ultimate personalized accessory. Monitor your health 24/7 with advanced heart rate and SpO2 tracking, detailed sleep analysis, and stress management tools. Unleash your athletic potential with over 150 sports modes and ultra-precise dual-band GNSS. Experience a stunning AMOLED display, seamless Xiaomi HyperOS, and long-lasting battery life, all packed into a 5ATM water-resistant, stylish design

This device is unlocked from any phone company (factory unlocked).

XIAOMI Watch S4: Redefine Your Style and Wellness

Discover the next evolution in wearable technology with the XIAOMI Watch S4, a masterpiece of design and intelligence crafted for the modern adult. This premium smartwatch seamlessly merges sophisticated aesthetics with powerful health and fitness tracking, creating an indispensable companion for your daily life. The Watch S4 is more than a timekeeper; it´s a statement of style and a commitment to your well-being, engineered to adapt to every facet of your world.

A New Look for Every Moment
Experience unprecedented customization with the revolutionary interchangeable bezel design. Effortlessly swap your watch´s look in seconds to match your outfit, mood, or occasion. From a classic, polished stainless steel for business meetings to a vibrant, textured bezel for your weekend adventures, the XIAOMI Watch S4 ensures your style is always uniquely yours. This innovative feature, combined with hundreds of dynamic and AI-enhanced watch faces, offers limitless possibilities for personal expression.

Your 24/7 Health Companion
Take control of your health with a suite of advanced monitoring capabilities. The Watch S4 is equipped with an upgraded 12-channel PPG sensor for exceptionally accurate 'wrist heart rate' tracking, providing continuous monitoring and alerts for high or low heart rates. Stay informed with all-day Blood Oxygen (SpO2) saturation monitoring, offering a deeper insight into your body´s respiratory health. Meticulously track your sleep stages—deep, light, REM, and even naps—with our new advanced algorithm that provides a detailed sleep score and actionable advice to improve your rest. Integrated stress monitoring and guided breathing exercises help you find moments of calm in a busy day.

Unleash Your Athletic Potential
Whether you´re a seasoned athlete or just beginning your fitness journey, the XIAOMI Watch S4 is your ultimate training partner. Choose from over 150 dedicated sports modes, including running, cycling, swimming, and HIIT. The built-in dual-band L1+L5 GNSS chip taps into all five major satellite systems (GPS, GLONASS, Galileo, QZSS, and BeiDou) for incredibly fast and precise location tracking, ensuring your outdoor routes and distances are recorded with pinpoint accuracy. With a 5ATM water resistance rating, you can confidently take your watch from the track to the pool.

Stunning Visuals, Seamless Experience
Your world comes to life on the brilliant 1.47-inch AMOLED display. With a high-resolution screen, ultra-smooth refresh rate, and peak brightness of 600 nits, every detail is crisp and vibrant, even in direct sunlight. The always-on display functionality keeps essential information just a glance away. Powered by the next-generation Xiaomi HyperOS, the Watch S4 delivers a fluid, intuitive user experience with seamless connectivity. Answer calls directly from your wrist via Bluetooth, make contactless payments with NFC, and control your smart home devices with ease. All this power is backed by an extraordinary battery life, offering up to 15 days of typical use on a single charge.

Technical Specifications:

* Resolution: 480x480 pixels
* Dimensions: 47.6mm x 47.6mm x 11.8mm
* Sensors: Advanced 'wrist heart rate' sensor (with blood oxygen sensor), accelerometer, gyroscope, ambient light sensor, compass, barometer
* Positioning: Dual-band L1+L5; GPS, GLONASS, Galileo, QZSS, BeiDou
* Water Resistance: 5ATM
* Connectivity: Bluetooth 5.3, NFC
* Battery: Up to 15 days typical usage; Magnetic charging
* System Compatibility: Android 8.0 or iOS 12.0 and above
* Operating System: Xiaomi HyperOS
* Target User: Adult

Specifications

Manual

Technical specifications of Xiaomi Watch S4

Dimensions

41.2 X 41.2 X 9.5 Mm
Weight

32 G (without strap)
Resolution

466 X 466, 326 Ppi
Accelerometer

Yes
Heart Rate

Yes
Water Resistance Rating

5 Atm
Color

Silver
Age

Adult
Features

Glonass
Features

Wrist heart rate
Product Aspect

New

Features of Xiaomi Watch S4

Color Silver

Color

Silver

Age Adult

Age

Adult

Features Glonass

Features

Glonass

Wrist heart rate

Product Aspect New

Product Aspect

New

Key differentiators

Comprehensive Health Tracking: Features an integrated heart rate monitor for continuous wellness insights.

Durable, Lightweight Design: Weighs only 32 g and offers a 5ATM water resistance rating, suitable for various activities.

Extended Battery Performance: Delivers up to 15 days of typical use, minimizing the need for frequent charging.

Modern Connectivity: Includes Bluetooth 5.3 for stable device pairing and NFC for convenient contactless transactions.

Vibrant Visuals: Equipped with a bright and energy-efficient AMOLED display for superior clarity.

Technology in Xiaomi Watch S4 smartwatch

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Xiaomi Watch S4 smartwatch

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Include AI Generated questions and answers

2026-07-20

Generated by AI and verified

Is the Xiaomi Watch S4 a good choice for detailed health monitoring?

Answer of Generated by AI and verified

Yes, it's designed for comprehensive wellness tracking. The watch provides continuous heart rate monitoring, all-day SpO2 tracking, detailed sleep stage analysis, and stress management tools to give you a full picture of your health.

* Generated by AI based on customer and product data

2026-07-20

Generated by AI and verified

Does the Xiaomi Watch S4 have built-in GPS?

Answer of Generated by AI and verified

Yes, the watch is equipped with dual-band GNSS. This provides precise and reliable location tracking for outdoor activities like running or cycling, directly on your wrist.

* Generated by AI based on customer and product data

2026-07-20

Generated by AI and verified

How many sports can I track with the Xiaomi Watch S4?

Answer of Generated by AI and verified

You can track over 150 different sports modes with the Xiaomi Watch S4. This extensive selection allows you to monitor a wide variety of athletic activities and get detailed insights into your performance.

* Generated by AI based on customer and product data

2026-07-20

Generated by AI and verified

What phones are compatible with the Xiaomi Watch S4?

Answer of Generated by AI and verified

The Xiaomi Watch S4 is compatible with most modern smartphones. It works with devices running Android 8.0 or a newer version, as well as iPhones running iOS 12.0 or newer.

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Daily Health & Wellness Monitoring 95% Fit

This watch is a capable partner for all-day health tracking. The integrated heart rate monitor provides continuous data, offering valuable insights into your cardiovascular health and stress levels throughout the day and night.

Continuous Heart Rate Monitoring,Long Battery Life

General Fitness & Multi-Sport Activity 90% Fit

As a great all-rounder, this watch is well-suited for tracking various fitness activities. Its 5ATM water resistance makes it a reliable upgrade for swimmers, while its lightweight design ensures comfort during runs, gym sessions, or other workouts.

5ATM Water Resistance,Lightweight Design

Sleep Quality Analysis 85% Fit

The watch's very light weight of 32g and extended battery life make it comfortable for overnight wear. This allows for uninterrupted sleep tracking, providing users with solid performance in analyzing sleep stages and overall quality.

Lightweight at 32g,Extended Battery Life

Connected Lifestyle & Contactless Payments 80% Fit

This watch enhances daily convenience by integrating key smartphone features onto your wrist. The inclusion of NFC allows for quick and secure contactless payments, while Bluetooth 5.3 ensures a stable connection for notifications and calls.

NFC for Payments,Bluetooth 5.3 Connectivity

Outdoor Recreation & Readability 75% Fit

For casual outdoor activities like hiking or cycling, the bright AMOLED color display provides excellent visibility even in sunny conditions. You can easily check your stats at a glance without slowing down.

AMOLED Color Display,1.47-inch Screen

Best for

Best for Comprehensive Health Tracking

This watch delivers valuable health data with its integrated heart rate monitor, making it a great choice for staying informed about your personal well-being.

Based on: Gender, Weight

Ideal for the Connected User

Featuring a vibrant AMOLED display, Bluetooth 5.3, and NFC connectivity, this watch provides a well-rounded and tech-savvy experience.

Based on: Gender, Weight

A Reliable Upgrade for Active Lifestyles

With its lightweight 32g body, 5ATM water resistance, and long battery life, this watch is a solid performer for daily wear and workouts.

Based on: Gender, Weight

Benefits

FunctionalTrack Key Health Metrics with an Integrated Heart Rate Monitor

Gain valuable insights into your well-being with the built-in heart rate monitor. This feature provides a foundational view of your health, empowering you to track a key metric and stay informed about your body's status.

heart_rate_monitor: yes

FunctionalEnjoy Up to 15 Days of Use on a Single Charge

Spend less time charging and more time moving with an impressive battery life. The Xiaomi Watch S4 offers up to 15 days of typical use on a single charge, providing reliable performance without daily interruptions.

battery_life: 15 hours (offering up to 15 days of typical use on a single charge)

FunctionalWear Confidently in Water with a 5ATM Resistance Rating

From rainy day runs to laps in the pool, this smartwatch is built to keep up with your active lifestyle. Its 5ATM water resistance rating means it's suitable for swimming and showering, offering peace of mind in wet conditions.

water_resistance: water-resistant (5ATM water resistance rating)

FunctionalStay Connected with Bluetooth 5.3 and NFC

Pair your watch with your smartphone for notifications and music control using modern Bluetooth 5.3 technology. The addition of NFC enables convenient contactless payments, streamlining your daily tasks directly from your wrist.

connectivity: bluetooth_5.3

nfc (Connectivity: Bluetooth 5.3

NFC)

FunctionalExperience a Stunning AMOLED Display

View your stats, notifications, and watch faces with exceptional clarity and rich color. The stunning AMOLED display provides a premium visual experience, making information easy to read at a glance in various lighting conditions.

display_type: color_display (Experience a stunning AMOLED display)

Ideal buyer profiles

Luxury Seeker Natalia

Natalia seeks technology that combines sophisticated aesthetics with practical functionality. She's upgrading from a simpler device and wants a smartwatch that complements her active, style-conscious lifestyle without being overly flashy.

The Xiaomi Watch S4 is a well-rounded upgrade, featuring a stunning color AMOLED display and a lightweight 32g unisex design that's comfortable for all-day wear. With Bluetooth 5.3 and NFC, it offers seamless integration into her daily routine, while the heart rate monitor and 5ATM water resistance support her fitness goals. It delivers a capable and refined experience.

Ideal Buyer

This buyer is passionate about the latest gadgets and appreciates a device with modern specifications and a smooth user experience. They are looking for a capable, feature-rich smartwatch that represents a solid performance upgrade.

This watch is a great all-rounder for the tech-savvy user. It features modern Bluetooth 5.3 connectivity, NFC for mobile convenience, and a vibrant color AMOLED display. The battery life, offering up to 15 days of typical use, is a significant advantage, minimizing downtime and keeping them connected.

This user is committed to their health and fitness journey and needs a reliable tool to track workouts and monitor progress. They are looking for a reliable upgrade that provides accurate data and is durable enough for regular, active use.

The Xiaomi Watch S4 is a solid performance partner. Its integrated heart rate monitor provides key health insights, while the 5ATM water resistance makes it suitable for a variety of activities, including swimming. The lightweight 32g build ensures comfort during long workouts, and the long battery life means it's always ready for the next session.

Competitive features

When considering options in the Smartwatches category, the Xiaomi Watch S4 presents a blend of style and comprehensive features against several similarly priced alternatives.

Where it excels

Extensive Personalization: With a revolutionary interchangeable bezel and hundreds of available watch faces, it offers significant customization to match your personal style. | Comprehensive Tracking: It provides a robust suite of monitoring tools, including advanced heart rate and SpO2 tracking, over 150 sports modes, and ultra-precise dual-band GNSS for detailed athletic analysis. | Advanced Display and Water Resistance: Featuring a stunning AMOLED display for clear visuals and a 5ATM water-resistance rating, it is built for both everyday elegance and athletic durability.

Consider alternatives if...

Since detailed comparative specifications for key attributes like battery life, connectivity, and GPS functionality are unavailable across the listed models, buyers prioritizing a specific performance metric in these areas may need to research each option individually.

Verdict

The Xiaomi Watch S4 stands out as a sophisticated and versatile smartwatch that merges style with powerful wellness tracking. Its combination of a premium AMOLED display, extensive sports modes, and deep health analysis makes it a strong contender for an all-in-one daily companion.

Specs comparison