Xiaomi Watch S4 41mm specifications and in-depth review

Xiaomi Watch S4 41mm

Manufacturer: Xiaomi

The Xiaomi Watch S4 41mm is a feature-packed smartwatch designed to offer a range of fitness and connectivity options. It comes with a 1.32″ OLED/AMOLED display and is equipped with essential health tracking features like heart rate monitoring. The watch also includes a long-lasting battery life of up to 8 days, making it suitable for daily use and active lifestyles.

In terms of technical specifications, the Xiaomi Watch S4 41mm boasts a 320 ppi pixel density, ensuring sharp visuals. It is also equipped with a variety of sensors, including a pulse oximeter, accelerometer, and GPS. The device supports eSIM connectivity and has 32GB of internal storage. Additionally, it offers water resistance with a 5 ATM rating, making it suitable for swimming and outdoor activities.

Pros
  • Includes a battery level indicator for easy monitoring of power status.
  • Supports a passcode for additional security, ensuring privacy and safety.
  • Offers inactivity alerts to help maintain an active lifestyle.
  • Features activity reports to track progress and fitness goals over time.
  • Has water tracking to help you stay on top of your hydration.
  • Includes weight tracking to monitor changes in body weight.
Cons
  • Does not support external memory via a memory card slot.
  • Is not compatible with Windows or Mac OS X for syncing or management.
  • Lacks a 3.5 mm headset jack, limiting wired audio connectivity options.
  • Does not include ECG technology for heart health monitoring.
Who is this for?

This product is ideal for users who prioritize security, ease of use, and activity tracking. With features like a passcode for privacy, activity reports to track progress, and inactivity alerts to encourage an active lifestyle, it suits individuals looking for an intuitive and secure device for health and fitness monitoring. Additionally, the ability to track water intake and weight makes it a good fit for health-conscious users aiming for comprehensive wellness tracking.

Who is this NOT for?

This product may not be suitable for those who require extensive device compatibility or advanced health monitoring features. It does not support Windows or Mac OS X for syncing, and lacks essential health tools like ECG technology or a 3.5 mm headset jack, limiting its utility for users seeking advanced medical insights or wired audio connectivity. Additionally, users who need external storage or advanced route tracking might find its limitations restrictive.

Design:

screen size 1.32"
Display type OLED/AMOLED
water resistance Waterproof
ATM rating 5 ATM
Always-On Display
pixel density 320 ppi
resolution 466 x 466 px
Watch band is replaceable
has branded damage-resistant glass
thickness 9.5 mm
weight 32 g
height 41.2 mm
width 41.2 mm
Has a display
has a touch screen
Has sapphire glass display
volume 16.12568 cm³
is designed for kids

The design of the Xiaomi Watch S4 41mm is crafted with attention to both aesthetics and functionality. The watch features a 1.32″ OLED/AMOLED display with a high resolution of 466 x 466 px and a pixel density of 320 ppi, ensuring vibrant and clear visuals. It is waterproof with a 5 ATM rating, making it suitable for swimming and outdoor activities. Additionally, the watch comes with a replaceable band, a sleek 9.5 mm thickness, and weighs just 32 g, offering both comfort and practicality. The display is always on for continuous use, and the watch also includes a sapphire glass display for durability against scratches.

Sensors:

Monitors blood oxygenation levels
Has a heart rate monitor
has GPS
has an accelerometer
Has a temperature sensor
has a compass
Has a barometer
has a gyroscope
Has a cadence sensor
Monitors perspiration

The Xiaomi Watch S4 41mm is equipped with a comprehensive set of sensors to track various health and fitness metrics. It includes a pulse oximeter to monitor blood oxygen levels, a heart rate monitor for continuous heart rate tracking, and a GPS for accurate location tracking during outdoor activities. The watch also features an accelerometer, body temperature sensor, compass, barometer, and gyroscope, enabling advanced activity tracking and environmental awareness. However, it does not support a cadence sensor or perspiration monitoring.

Activity tracking:

Tracks your sleep
Tracks distance
Tracks steps taken
Measures pace
Provides sleep reports
Detects activities automatically
Has a route tracker
Tracks elevation
Has exercise tagging
Has a stroke counter for swimming
Tracks calorie intake
Designed for diving

The Xiaomi Watch S4 41mm offers comprehensive activity tracking features to help monitor various aspects of your fitness journey. It tracks your sleep, distance, and steps taken, while also measuring your pace during workouts. The watch provides detailed sleep reports and automatically detects activities, making it easier to track your daily movements. Other features include a route tracker, elevation tracking, and exercise tagging for more tailored activity logs. Additionally, the watch includes a swim stroke counter and can track calorie intake through its food tracking capabilities. However, it is not designed for diving.

Connectivity:

has a cellular module
Is compatible with iOS
Is compatible with Android
Bluetooth version 5.4
supports Wi-Fi
supports ANT+
SIM cards 1 eSIM
has NFC
supports Galileo

The Xiaomi Watch S4 41mm offers versatile connectivity options, including support for 1 eSIM for cellular connectivity. It is compatible with both iOS and Android devices, ensuring broad compatibility with different smartphones. The watch supports Bluetooth 5.4 for seamless pairing with devices and includes NFC for contactless transactions. It also features Galileo support for enhanced GPS accuracy, though it does not support Wi-Fi or ANT+ connectivity.

Battery:

battery life 8 days
battery power 320 mAh
has wireless charging
has a rechargeable battery
Has a solar power battery
has a removable battery

The Xiaomi Watch S4 41mm is equipped with a 320 mAh rechargeable battery, providing up to 8 days of usage on a single charge. It also supports wireless charging, offering convenience without the need for cables. The watch does not feature a solar power battery or a removable battery, ensuring ease of use with a streamlined design.

Features:

release date June 2025
has HRV tracking
measures VO2 max
measures resting heart rate
has fast/slow heart rate notifications
shows readiness level
Can be used to answer calls
Locates your phone
Has call control
Has notifications
has irregular heart rate warnings
Has ECG technology
Has silent alarm
Has vibrating alerts
has fall detection
Has a stopwatch
Has smart alarm
has voice commands
internal storage 32GB
Has a built-in camera remote control function
Acquires GPS faster
warranty period 1 years
number of microphones 1
has a front camera

The Xiaomi Watch S4 41mm comes with a wide range of features designed to support your health and daily needs. It includes HRV tracking, VO2 max measurement, and the ability to monitor your resting heart rate. The watch also offers fast/slow heart rate notifications, fall detection, and wrist notifications to keep you informed. Additional features include silent alarms, vibrating alerts, and a built-in camera remote control function. It also supports voice commands and provides a 32GB internal storage for data and app usage.

App & Software:

Provides activity reports
Has inactivity alerts
Counts how many calories you've burned
Has goal setting
Has achievements
Free app
Has exercise diary
Ad-free
Has coaching
Has temperature tracking
Has period notifications
Supports routes
Syncs with existing calendars
Has music playback
Exports to email
Includes maps
Doesn’t require account
Predicts ovulation
Predicts start date
Supports widgets
Can be personalised
Has barcode scanner on app
Tracks water intake
Has weight tracking

The Xiaomi Watch S4 41mm offers a comprehensive suite of app features to enhance your fitness and health tracking. It provides activity reports, calorie counting, and goal setting, helping users stay motivated and on track with their fitness journey. The watch also includes an exercise diary, temperature tracking, period notifications, and even ovulation predictions. You can personalize the app, track your water intake, and sync it with your existing calendar. Additionally, it supports workout music playback, maps, and widgets, all within an ad-free and free-to-use app experience.

Miscellaneous:

has a battery level indicator
Has passcode
Is compatible with Windows
has an external memory slot
Is compatible with Mac OS X
has a socket for a 3.5 mm audio jack

The Xiaomi Watch S4 41mm includes practical features such as a battery level indicator and a passcode for added security. It does not support external memory, compatibility with Windows or Mac OS X, nor does it have a 3.5 mm headset jack. These features ensure a streamlined, secure experience without extra hardware requirements.

Final Verdict

The product excels as a user-friendly health and fitness tracker, offering features like activity reports, inactivity alerts, and health tracking capabilities such as water intake and weight tracking. While it is not suitable for those requiring advanced medical monitoring or extensive compatibility with other platforms, its ease of use and focused fitness features make it a solid choice for individuals looking for a reliable and straightforward wellness companion.

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