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Wearable comparison

Xiaomi Watch S4 vs Xiaomi Watch S4 41mm

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Xiaomi Watch S4

Xiaomi Watch S4

  • Screen: 466 × 466 pixels; 326 ppi.
  • Runs Xiaomi HyperOS 2.
  • Bluetooth 5.3 connection.
  • 486 mAh battery capacity.
  • 5 ATM.
KSh 21,940In Stock
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02
Xiaomi Watch S4 41mm

Xiaomi Watch S4 41mm

  • Screen: 466 × 466 pixels; 352 ppi.
  • Runs Xiaomi HyperOS 3.
  • Bluetooth 5.4 connection.
  • 320 mAh battery capacity.
  • 5 ATM.
KSh 23,360In Stock
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2 of 4 products

Our quick verdict

The Xiaomi Watch S4 lasts longer between charges (15 days) and syncs with apps such as Strava, while the Xiaomi Watch S4 41mm is lighter to wear all day.

Display

Xiaomi Watch S4
466 × 466 pixels; 326 ppi
Xiaomi Watch S4 41mm
466 × 466 pixels; 352 ppi

Software

Xiaomi Watch S4
Runs Xiaomi HyperOS 2
Xiaomi Watch S4 41mm
Runs Xiaomi HyperOS 3

Connections

Xiaomi Watch S4
Bluetooth 5.3 connection
Xiaomi Watch S4 41mm
Bluetooth 5.4 connection

Capacity

Xiaomi Watch S4
486 mAh battery capacity
Xiaomi Watch S4 41mm
320 mAh battery capacity

Portability

Xiaomi Watch S4
About 44.5 g
Xiaomi Watch S4 41mm
About 32 g

Key differences

The main differences to help you choose.

Xiaomi Watch S4

  • Longer battery life: up to 15 days (vs 8).
  • Bigger battery: 486 mAh (vs 320 mAh).
  • Syncs with third-party apps such as Strava and Apple Health.

Xiaomi Watch S4 41mm

  • Lighter: about 32 g (vs about 44.5 g).
  • Slimmer: 9.5 mm thick (vs 12 mm).
  • Newer Bluetooth 5.4 (vs 5.3).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

More topicsFewer topics
6 priorities selected.
How each product answers the selected priorities
PriorityXiaomi Watch S4Xiaomi Watch S4 41mm
Battery life486 mAh battery320 mAh battery
PortabilityAbout 44.5 gAbout 32 g
Display1.43-inch OLED display, 60 Hz, 326 ppi1.32-inch OLED display, 60 Hz, 352 ppi
SoftwareXiaomi HyperOS 2Xiaomi HyperOS 3
ConnectionsBluetooth 5.3Bluetooth 5.4
Sleep trackingSleep trackingSleep tracking, sleep trend reports and supported improvement plan

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Display1.43-inch AMOLED1.32-inch AMOLED
Screen resolution466 × 466 pixels; 326 ppi466 × 466 pixels; 352 ppi
Display protectionScratch/drop-proof glassScratch/drop-proof glass
Display features60 Hz refresh rate; up to 1,500 nits HBM60 Hz refresh rate; up to 1,500 nits HBM

Connectivity

Connectivity specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Network / cellularPhone network shared through Bluetooth (Android)No cellular connectivity
Wi-FiNoNo
BluetoothBluetooth 5.3Bluetooth 5.4
NFCSupported (regional availability)Yes (market/region dependent)
Positioning / GNSSGPS; Galileo; GLONASS; BeiDou; QZSSGPS; Galileo; GLONASS; BeiDou; QZSS
SIM / eSIM—No

Identity & design

Identity & design specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
BrandXiaomiXiaomi
ModelXiaomi Watch S4Xiaomi Watch S4 41mm
Announced2024, October 292025, June 26
Dimensions47.3 × 47.3 × 12.0 mm, excluding strap and protrusions41.2 × 41.2 × 9.5 mm, excluding strap and protrusions
WeightApproximately 44.5 g without strapApproximately 32 g without strap
Build materialsAluminum-alloy frameStainless-steel frame
Wrist size140–210 mm (black, silver); 135–210 mm (rainbow)120–190 mm (black, mint green, white); 130–190 mm (sunset gold)
Strap / bandFluororubber; additional nylon strap with rainbow versionFluororubber (black, mint green); leather (white); Milanese (sunset gold)
Controls / buttonsRotating crown and side button; touchscreenRotatable crown and lower button

Performance & software

Performance & software specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Operating systemXiaomi HyperOS 2Xiaomi HyperOS 3

Audio & communication

Audio & communication specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
SpeakerSupportedSupported
Microphone2 microphones1 microphone
CallingBluetooth calling with a connected smartphoneBluetooth calling with a connected smartphone

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
SensorsHeart-rate and blood-oxygen sensor; accelerometer; gyroscope; ambient-light sensor; electronic compass; barometer; Hall sensorHeart-rate and blood-oxygen sensor; accelerometer; gyroscope; ambient-light sensor; electronic compass; barometer; temperature sensor
Health & wellness featuresHeart rate; blood oxygen; stress monitoringHeart rate, blood oxygen, stress and skin-temperature monitoring; supported cycle predictions; general wellness information
Sleep trackingSleep trackingSleep tracking, sleep trend reports and supported improvement plan
Sports / workout modes150+ sports modes150+ sports modes
Training & outdoor featuresRunning-form metrics; professional skiing mode; outdoor routes; running coursesWorkout reports; training effects, load and recovery; BLE heart-rate broadcasting to compatible bike computers
Safety & emergency featuresSkiing fall detection and emergency-contact calling with a connected smartphoneEmergency SOS and supported skiing fall detection require prior setup, emergency contacts and connected Mi Fitness app; detection is not guaranteed; SMS and location features depend on supported phone OS

Battery & durability

Battery & durability specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Battery capacity486 mAh320 mAh
Battery lifeUp to 15 days typical useUp to 8 days light use; 4 days normal use; 3 days heavy use
Charging2-pin magnetic charging dock2-pin magnetic charging dock
Water resistance5 ATM5 ATM

Compatibility

Compatibility specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Phone compatibilityAndroid 8.0 or later; iOS 14.0 or laterAndroid 8.0 or later; iOS 14.0 or later
Companion appMi FitnessMi Fitness
ColorsBlack, Silver, RainbowBlack; mint green; white; sunset gold

Additional specifications

Additional specifications specifications comparison
SpecificationXiaomi Watch S4Xiaomi Watch S4 41mm
Case materialAluminum alloyStainless steel
Watch weight without strapApproximately 44.5g without strapApproximately 32g without strap
Display materialAMOLED—
Pixels per inch326 ppi352 ppi
Peak brightness1,500 nits HBM1,500 nits HBM
Cover / touchscreenSupportedAMOLED touchscreen
Packing listWatch with bezel and strap; magnetic charging dock; user manualWatch; magnetic charging dock; user manual
Third-party fitness appsHealth Connect; Strava; Suunto synchronization—
Release statusAvailable. Released 2024, October 29Available. Released 2025, June 26
Card slotNoNo
CameraNoNo
3.5 mm headphone jackNoNo
USBNoNo
RadioNoNo
Heavy-use battery life—Up to 3 days under manufacturer heavy-use tests
Display—1.32-inch AMOLED; 466 × 466; 352ppi
Brightness / refresh—Up to 1500nits HBM full screen; up to 60Hz depending on interface
Size / weight—41.2 × 41.2 × 9.5mm; approximately 32g without strap
Strap options—Black / Mint Green: fluororubber; White: leather; Sunset Gold: Milanese
Wrist fit—Black, Mint Green and White: approximately 120–190mm; Sunset Gold: approximately 130–190mm
Battery—320mAh; up to 8 days light / 4 days normal / 3 days heavy under tests
Positioning—Five-system independent dual-frequency L1 + L5 GNSS
Wireless / calls—Bluetooth 5.4; connected-phone calls
System / app—Xiaomi HyperOS 3; Mi Fitness
Phone compatibility—Android 8.0+; iOS 14.0+
Water resistance—5ATM; appropriate shallow-water use; no hot showers, saunas or diving; protect leather strap from water
Package—One Xiaomi Watch S4 41mm with selected strap, magnetic charging dock, user manual including warranty notice
Model numbers—M2502W1
2G bands—Not applicable
3G bands——
4G bands——

Similarities

  • Both have 60 Hz displays.
  • Both have NFC.
  • Both are water resistant to 50 m.
  • Both take calls over Bluetooth.
  • Both have similar screen sizes (1.43 and 1.32 inches).
  • Both connect over Bluetooth.

In summary

For most buyers the Xiaomi Watch S4 is the better buy; the Xiaomi Watch S4 41mm makes sense if you want a lighter watch for all-day wear.

Back to compared products ↑

In-stock alternatives

Amazfit Active 2 Premium RoundFor Xiaomi Watch S4Amazfit Active 2 Premium RoundView product ↗Huawei Watch GT 5For Xiaomi Watch S4Huawei Watch GT 5View product ↗Samsung Galaxy Watch 6For Xiaomi Watch S4 41mmSamsung Galaxy Watch 6View product ↗Samsung Galaxy Watch 7For Xiaomi Watch S4 41mmSamsung Galaxy Watch 7View product ↗

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