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Wearable comparison

Samsung Galaxy Watch 7 vs Xiaomi Watch S4 41mm

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Samsung Galaxy Watch 7

Samsung Galaxy Watch 7

  • Screen: 44 mm: 480 × 480 pixels; 40 mm: 432 × 432 pixels.
  • Exynos W1000, 3 nm processor.
  • 2 GB RAM in this version.
  • 32 GB storage in this version.
  • Runs Wear OS 5; One UI 6 Watch.
KSh 22,500In 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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Samsung Galaxy Watch FEKSh 19,500
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2 of 4 products

Our quick verdict

The Xiaomi Watch S4 41mm lasts longer between charges (up to 8 days), works with Android phones and iPhones and is lighter to wear all day, while the Samsung Galaxy Watch 7 takes ECG heart-rhythm readings, has a larger 1.5-inch screen and offers hypertension notifications.

Display

Samsung Galaxy Watch 7
44 mm: 480 × 480 pixels; 40 mm: 432 × 432 pixels
Xiaomi Watch S4 41mm
466 × 466 pixels; 352 ppi

Software

Samsung Galaxy Watch 7
Runs Wear OS 5; One UI 6 Watch
Xiaomi Watch S4 41mm
Runs Xiaomi HyperOS 3

Connections

Samsung Galaxy Watch 7
Bluetooth 5.3 connection
Xiaomi Watch S4 41mm
Bluetooth 5.4 connection

Battery life

Samsung Galaxy Watch 7
Up to 40 hours per charge
Xiaomi Watch S4 41mm
320 mAh battery

Portability

Samsung Galaxy Watch 7
33.8 g
Xiaomi Watch S4 41mm
About 32 g

Key differences

The main differences to help you choose.

Samsung Galaxy Watch 7

  • Larger 1.5-inch screen (vs 1.32-inch).
  • ECG heart-rhythm readings.
  • eSIM.
  • Cellular option (LTE/5G models) for calls and data without your phone.
  • Blood-pressure (hypertension) notifications.

Xiaomi Watch S4 41mm

  • Longer rated battery life: up to 8 days (vs 40 hours).
  • Works with Android phones and iPhones.
  • Lighter: about 32 g (vs 33.8 g).
  • 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.

6 priorities selected.
How each product answers the selected priorities
PrioritySamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Battery lifeUp to 40 hours per charge320 mAh battery
Display1.5-inch OLED display1.32-inch OLED display, 60 Hz, 352 ppi
SoftwareWear OS 5Xiaomi HyperOS 3
ConnectionsBluetooth 5.3Bluetooth 5.4
Battery capacity44 mm: 425 mAh320 mAh battery
Water resistanceIP68 water and dust resistance5 ATM

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Display44 mm: 1.5-inch Super AMOLED; 40 mm: 1.3-inch Super AMOLED1.32-inch AMOLED
Screen resolution44 mm: 480 × 480 pixels; 40 mm: 432 × 432 pixels466 × 466 pixels; 352 ppi
Display protectionSapphire crystalScratch/drop-proof glass
Display featuresFull-colour always-on display60 Hz refresh rate; up to 1,500 nits HBM

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Network / cellularGSM / HSPA / LTENo cellular connectivity
SIM / eSIMeSIMNo
Wi-FiWi-Fi 2.4 GHz + 5 GHzNo
BluetoothBluetooth 5.3Bluetooth 5.4
NFCSupportedYes (market/region dependent)
Positioning / GNSSDual-frequency GPS, L1 + L5; GLONASS; BeiDou; GalileoGPS; Galileo; GLONASS; BeiDou; QZSS

Identity & design

Identity & design specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
BrandSamsungXiaomi
ModelSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Announced2024, July 102025, June 26
Dimensions44 mm: 44.4 × 44.4 × 9.7 mm; 40 mm: 40.4 × 40.4 × 9.7 mm41.2 × 41.2 × 9.5 mm, excluding strap and protrusions
Weight44 mm: 33.8 g; 40 mm: 28.8 g, without bandApproximately 32 g without strap
Build materialsAluminum caseStainless-steel frame
Controls / buttonsTouchscreen and physical buttonsRotatable crown and lower button
Wrist size—120–190 mm (black, mint green, white); 130–190 mm (sunset gold)
Strap / band—Fluororubber (black, mint green); leather (white); Milanese (sunset gold)

Performance & software

Performance & software specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
ProcessorExynos W1000, 3 nm—
CPU5-core—
GPUMali-G68—
RAM2 GB—
Storage32 GB—
Operating systemWear OS 5; One UI 6 WatchXiaomi HyperOS 3

Audio & communication

Audio & communication specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
SpeakerSupportedSupported
MicrophoneSupported1 microphone
CallingBluetooth calling with a connected smartphone; standalone calling on LTE editionsBluetooth calling with a connected smartphone

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
SensorsSamsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensorHeart-rate and blood-oxygen sensor; accelerometer; gyroscope; ambient-light sensor; electronic compass; barometer; temperature sensor
Health & wellness featuresHeart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature and Energy Score; availability varies by market and paired phoneHeart rate, blood oxygen, stress and skin-temperature monitoring; supported cycle predictions; general wellness information
Sleep trackingSleep tracking, sleep coaching and sleep-apnoea features where availableSleep tracking, sleep trend reports and supported improvement plan
Sports / workout modesMultiple workout modes with automatic workout detection150+ sports modes
Training & outdoor featuresDual-frequency route tracking; personalised heart-rate zones and running metricsWorkout reports; training effects, load and recovery; BLE heart-rate broadcasting to compatible bike computers
Safety & emergency featuresFall detection and SOS features when configuredEmergency 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
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Battery capacity44 mm: 425 mAh; 40 mm: 300 mAh320 mAh
Battery lifeUp to 40 hours with Always-On Display offUp to 8 days light use; 4 days normal use; 3 days heavy use
ChargingFast wireless charging, WPC-based2-pin magnetic charging dock
Water resistance5 ATM; IP685 ATM
Durability / certificationsMIL-STD-810H—

Compatibility

Compatibility specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Phone compatibilityAndroid 11.0 or later; more than 1.5 GB RAMAndroid 8.0 or later; iOS 14.0 or later
Companion appGalaxy Wearable; Samsung HealthMi Fitness
Colors44 mm: Green, Silver; 40 mm: Green, CreamBlack; mint green; white; sunset gold

Additional specifications

Additional specifications specifications comparison
SpecificationSamsung Galaxy Watch 7Xiaomi Watch S4 41mm
Case materialAluminumStainless steel
Release statusAvailable. Released 2024, July 24Available. Released 2025, June 26
Model numbersSM-L310F, SM-L315FM2502W1
Card slotNoNo
CameraNoNo
3.5 mm headphone jackNoNo
USBNoNo
RadioNoNo
2G bandsGSM 850 / 900 / 1800 / 1900Not applicable
3G bandsHSDPA 850 / 900 / 2100—
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 40, 66, 71—
Network speedHSPA, LTE—
SAR (EU)0.73 W/kg (head) 1.85 W/kg (body)—
Additional durability featuresArmor Aluminum 2—
Watch weight without strap—Approximately 32g without strap
Pixels per inch—352 ppi
Peak brightness—1,500 nits HBM
Cover / touchscreen—AMOLED touchscreen
Heavy-use battery life—Up to 3 days under manufacturer heavy-use tests
Packing list—Watch; magnetic charging dock; user manual
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

Similarities

  • Both have NFC.
  • Both are water resistant to 50 m.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both have similar screen sizes (1.5 and 1.32 inches).
  • Both connect over Bluetooth.

In summary

Get the Xiaomi Watch S4 41mm if you want longer battery life and a choice of Android phone or iPhone, or the Samsung Galaxy Watch 7 if you would rather have ECG heart-rhythm readings and a larger 1.5-inch screen.

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In-stock alternatives

Samsung Galaxy Watch 6For Samsung Galaxy Watch 7Samsung Galaxy Watch 6View product ↗Amazfit Active 2 Premium RoundFor Samsung Galaxy Watch 7Amazfit Active 2 Premium RoundView product ↗Xiaomi Watch S4For Xiaomi Watch S4 41mmXiaomi Watch S4View product ↗

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