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Wearable comparison

Xiaomi Watch S1 Pro vs Samsung Galaxy Watch 8 Classic

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Xiaomi Watch S1 Pro

Xiaomi Watch S1 Pro

  • 48.5 g.
  • Screen: 480 × 480 pixels.
  • 12 nm chip processor.
  • Runs MIUI Watch OS.
  • Wi-Fi 4 support.
KSh 38,380In Stock
02
Samsung Galaxy Watch 8 Classic

Samsung Galaxy Watch 8 Classic

  • Screen: 438 × 438 pixels.
  • Exynos W1000, 3 nm processor.
  • 2 GB RAM in this version.
  • 64 GB storage in this version.
  • Runs Wear OS 6; One UI 8 Watch.
KSh 38,500In Stock

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2 of 4 products

Our quick verdict

The Xiaomi Watch S1 Pro lasts longer between charges (up to 14 days), works with Android phones and iPhones and is lighter to wear all day, while the Samsung Galaxy Watch 8 Classic has a brighter screen for outdoor use, a cellular option for calls without your phone and an eSIM.

Display

Xiaomi Watch S1 Pro
480 × 480 pixels
Samsung Galaxy Watch 8 Classic
438 × 438 pixels

Performance

Xiaomi Watch S1 Pro
12 nm chip processor
Samsung Galaxy Watch 8 Classic
Exynos W1000, 3 nm processor

Software

Xiaomi Watch S1 Pro
Runs MIUI Watch OS
Samsung Galaxy Watch 8 Classic
Runs Wear OS 6; One UI 8 Watch

Battery capacity

Xiaomi Watch S1 Pro
500 mAh battery capacity
Samsung Galaxy Watch 8 Classic
445 mAh battery capacity

Portability

Xiaomi Watch S1 Pro
48.5 g
Samsung Galaxy Watch 8 Classic
63.5 g

Key differences

The main differences to help you choose.

Xiaomi Watch S1 Pro

  • Longer rated battery life: up to 14 days (vs 40 hours).
  • Bigger battery: 500 mAh (vs 445 mAh).
  • Works with Android phones and iPhones.
  • Lighter: 48.5 g (vs 63.5 g).
  • Higher screen resolution: 480 × 480 (vs 438 × 438).
  • Syncs with third-party apps such as Strava and Apple Health.

Samsung Galaxy Watch 8 Classic

  • Brighter display: up to 3,000 nits (vs 600).
  • eSIM.
  • Cellular option (LTE/5G models) for calls and data without your phone.
  • Newer model: released in 2025 (vs 2022).

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
PriorityXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Battery life500 mAh batteryUp to 40 hours per charge
Display1.47-inch OLED display1.34-inch OLED display
Performance12 nm chip processorExynos W1000 processor
SoftwareMIUI Watch OSWear OS 6
ConnectionsWi-Fi 4, Bluetooth 5.2Bluetooth 5.3
Battery capacity500 mAh battery445 mAh battery

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Display1.47-inch AMOLED1.34-inch Super AMOLED
Screen resolution480 × 480 pixels438 × 438 pixels
Display protectionSynthetic sapphire glassSapphire crystal
Display featuresAlways-on display; up to 600 nits brightnessFull-colour always-on display

Connectivity

Connectivity specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Network / cellularNo cellular connectivityGSM / HSPA / LTE
SIM / eSIMNoeSIM
Wi-FiWi-Fi 802.11 b/g/n (China only)Wi-Fi 2.4 GHz + 5 GHz
Bluetooth5.2, A2DP, LEBluetooth 5.3
NFCSupported; Mastercard payments (regional availability)Supported
Positioning / GNSSDual-band GPS; BeiDou; GLONASS; Galileo; QZSSDual-frequency GPS, L1 + L5; GLONASS; BeiDou; Galileo

Identity & design

Identity & design specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
BrandXiaomiSamsung
ModelXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Announced2022, August 122025, July 09
Dimensions46 x 46 x 11.3 mm (1.81 x 1.81 x 0.44 in)46.4 × 46.0 × 10.6 mm
Weight48.5 g (1.73 oz)63.5 g without band
Build materialsSapphire crystal front, stainless steel frame, sapphire crystal (heart rate zone), plastic backStainless-steel case
Wrist size135–205mm with supplied brown leather strap—
Strap / bandCalfskin leather or fluororubber—
Controls / buttonsRotatable crown and watch buttonRotating bezel; Quick Button; Home and Back buttons

Performance & software

Performance & software specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Processor12 nm chipExynos W1000, 3 nm
Operating systemMIUI Watch OSWear OS 6; One UI 8 Watch
CPU—5-core
GPU—Mali-G68
RAM—2 GB
Storage—64 GB

Audio & communication

Audio & communication specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
SpeakerSupportedSupported
MicrophoneSupportedSupported
CallingBluetooth calling; AI call noise reductionBluetooth calling with a connected smartphone; standalone calling on LTE editions

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
SensorsHeart-rate sensor with blood-oxygen sensor; accelerometer; gyroscope; geomagnetic; atmospheric; ambient light; capacitive; temperatureSamsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensor; 3D Hall sensor
Health & wellness featuresAll-day heart rate; blood oxygen; stress tracking; high/low heart-rate alertsHeart and wellness tracking; Antioxidant Index, Vascular Load, Energy Score and stress features. Availability varies by market and paired phone.
Sleep trackingSleep trackingSleep tracking, sleep coaching, Bedtime Guidance and sleep-apnoea features where available
Sports / workout modes100+ fitness modes—
Training & outdoor featuresTen running courses; independent dual-band positioning; mountaineering distance trackingRunning Coach and dual-frequency route tracking

Battery & durability

Battery & durability specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Battery capacity500 mAh445 mAh
Battery lifeUp to 14 days typical use; 10 days intensive use; 5 days AOD useAlways-On Display off: up to 40 hours Always-On Display on: up to 30 hours
ChargingWireless fast chargingFast wireless charging, WPC-based
Water resistance5 ATM5 ATM; IP68
Durability / certifications—MIL-STD-810H

Compatibility

Compatibility specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Phone compatibilityAndroid 6.0 or higher; iOS 11 or higherAndroid 12.0 or later; more than 1.5 GB RAM
Companion appMi FitnessGalaxy Wearable; Samsung Health
ColorsBlack, SilverBlack; White

Additional specifications

Additional specifications specifications comparison
SpecificationXiaomi Watch S1 ProSamsung Galaxy Watch 8 Classic
Case materialStainless steelStainless steel
Vibration motorLinear vibration motor—
Watch weight without strap48.5g without strap—
Display materialSynthetic sapphire—
Peak brightness600 nits3,000 nits peak
Cover / touchscreenAMOLED touchscreen—
Charging timeApproximately 85 minutes full charge; 10 minutes for up to 2 days typical use—
Packing listWatch, wireless charging dock including charging cable, user manual including warranty notice—
Sports coach10 built-in running courses—
Third-party fitness appsStrava and Apple Health synchronization—
Display1.47-inch AMOLED touchscreen; 480 × 480—
Case / strapSilver stainless steel case; brown leather strap—
Size / weight46 × 46 × 11.28mm; 48.5g watch body only—
Wrist range135–205mm—
PositioningFive-system independent dual-band GNSS—
Fitness100+ fitness modes; ten running courses—
Connection / callsBluetooth 5.2 + BLE; paired-phone Bluetooth calling—
Battery500mAh; up to 14 days under typical-use test conditions—
ChargingWireless dock; up to approximately 85 minutes with suitable QC3.0 equipment under test conditions—
CompatibilityAndroid 6.0+; iOS 11+; Mi Fitness—
Water resistance5ATM watch; protect leather strap from water—
PackageWatch, wireless charging dock including charging cable, user manual including warranty notice—
Release statusAvailable. Released 2022, August 12Available. Released 2025, July 25
Model numbersM2135W1, M2134W1SM-L500, SM-L505U
Card slotNoNo
CameraNoNo
3.5 mm headphone jackNoNo
USBNoNo
RadioNoNo
Network speedNoHSPA, LTE
2G bands—GSM 850 / 900 / 1800 / 1900
3G bands—HSDPA 850 / 900 / 2100
4G bands—1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 40, 66, 71
SAR (US)—1.04 W/kg (head) 0.41 W/kg (body)
SAR (EU)—0.03 W/kg (head) 0.67 W/kg (body)
Additional durability features—Rotating bezel

Similarities

  • Both have NFC.
  • Both have a stainless steel case.
  • Both are water resistant to 50 m.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both have similar screen sizes (1.47 and 1.34 inches).

In summary

For most buyers the Xiaomi Watch S1 Pro is the better buy; the Samsung Galaxy Watch 8 Classic makes sense if you want a brighter screen for outdoor use.

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