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Watch comparison

Samsung Galaxy Ultra vs Samsung Galaxy 8 Classic

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Samsung Galaxy Watch Ultra

Samsung Galaxy Watch Ultra

  • Screen: 480 × 480 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 45,000In Stock
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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 spaces available

Samsung Galaxy Watch 9 44mmKSh 42,000
Huawei Watch GT 7 ProKSh 41,500
WHOOP Peak 5.0 SensorKSh 38,000
Samsung Galaxy Watch 9 40mmKSh 39,500
Google Pixel Watch 5 41mmKSh 42,000
Amazfit Balance 3KSh 48,000
Google Pixel Watch 4KSh 44,500
2 of 4 products

Our quick verdict

With the same Exynos W1000 processor, 2 GB of RAM and IP68 rating, the Samsung Galaxy Watch Ultra lasts longer per charge (80 hours), takes ECG heart-rhythm readings and has a larger 1.5-inch, sharper screen, while the Samsung Galaxy Watch 8 Classic has more storage (64 GB) and is slimmer.

Display

Samsung Galaxy Watch Ultra
480 × 480 pixels
Samsung Galaxy Watch 8 Classic
438 × 438 pixels

Storage

Samsung Galaxy Watch Ultra
32 GB storage in this version
Samsung Galaxy Watch 8 Classic
64 GB storage in this version

Software

Samsung Galaxy Watch Ultra
Runs Wear OS 5; One UI 6 Watch
Samsung Galaxy Watch 8 Classic
Runs Wear OS 6; One UI 8 Watch

Battery capacity

Samsung Galaxy Watch Ultra
590 mAh battery capacity
Samsung Galaxy Watch 8 Classic
445 mAh battery capacity

Portability

Samsung Galaxy Watch Ultra
60.5 g
Samsung Galaxy Watch 8 Classic
63.5 g

Key differences

The main differences to help you choose.

Samsung Galaxy Watch Ultra

  • Rated for up to 80 hours per charge (vs 40).
  • Bigger battery: 590 mAh (vs 445 mAh).
  • Larger 1.5-inch screen (vs 1.34-inch).
  • ECG heart-rhythm readings.
  • Titanium case (vs stainless steel case).
  • Swimproof: water resistant to 100 m (vs 50 m).

Samsung Galaxy Watch 8 Classic

  • More storage: 64 GB (vs 32 GB).
  • Slimmer: 10.6 mm thick (vs 12.1 mm).
  • Lower price: KSh 38,500 (vs KSh 45,000).
  • Newer Wear OS 6 (vs Wear OS 5).

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
PrioritySamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Battery lifeUp to 80 hours per chargeUp to 40 hours per charge
Storage32 GB storage64 GB storage
Display1.5-inch OLED display1.34-inch OLED display
PerformanceExynos W1000 processorExynos W1000 processor
SoftwareWear OS 5Wear OS 6
Battery capacity590 mAh battery445 mAh battery

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Display1.5-inch Super AMOLED1.34-inch Super AMOLED
Screen resolution480 × 480 pixels438 × 438 pixels
Display protectionSapphire crystalSapphire crystal
Display featuresFull-colour always-on displayFull-colour always-on display

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Network / cellularGSM / HSPA / LTEGSM / HSPA / LTE
SIM / eSIMeSIMeSIM
Wi-FiWi-Fi 2.4 GHz + 5 GHzWi-Fi 2.4 GHz + 5 GHz
BluetoothBluetooth 5.3Bluetooth 5.3
NFCSupportedSupported
Positioning / GNSSDual-frequency GPS, L1 + L5; GLONASS; BeiDou; GalileoDual-frequency GPS, L1 + L5; GLONASS; BeiDou; Galileo

Identity & design

Identity & design specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
BrandSamsungSamsung
ModelSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Announced2024, July 102025, July 09
Dimensions47.1 × 47.4 × 12.1 mm46.4 × 46.0 × 10.6 mm
Weight60.5 g without band63.5 g without band
Build materialsTitanium caseStainless-steel case
Controls / buttonsTouchscreen; Quick button; Home and Back buttonsRotating bezel; Quick Button; Home and Back buttons

Performance & software

Performance & software specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
ProcessorExynos W1000, 3 nmExynos W1000, 3 nm
CPU5-core5-core
GPUMali-G68Mali-G68
RAM2 GB2 GB
Storage32 GB64 GB
Operating systemWear OS 5; One UI 6 WatchWear OS 6; One UI 8 Watch

Audio & communication

Audio & communication specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
SpeakerSupportedSupported
MicrophoneSupportedSupported
CallingBluetooth calling with a connected smartphone; standalone calling on LTE editionsBluetooth calling with a connected smartphone; standalone calling on LTE editions

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
SensorsSamsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensorSamsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensor; 3D Hall 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 and wellness tracking; Antioxidant Index, Vascular Load, Energy Score and stress features. Availability varies by market and paired phone.
Sleep trackingSleep tracking, sleep coaching and sleep-apnoea features where availableSleep tracking, sleep coaching, Bedtime Guidance and sleep-apnoea features where available
Sports / workout modesMultiple workout modes including multisport and automatic workout detection—
Training & outdoor featuresDual-frequency GPS; GPX routes; Track Back; personalised heart-rate zones; Functional Threshold PowerRunning Coach and dual-frequency route tracking
Safety & emergency featuresFall detection, SOS and siren features when configured—

Battery & durability

Battery & durability specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Battery capacity590 mAh445 mAh
Battery lifeUp to 80 hours with Always-On Display off; up to 60 hours with Always-On Display on; up to 100 hours in Power Saving ModeAlways-On Display off: up to 40 hours Always-On Display on: up to 30 hours
ChargingFast wireless charging, WPC-basedFast wireless charging, WPC-based
Water resistance10 ATM; IP685 ATM; IP68
Durability / certificationsMIL-STD-810HMIL-STD-810H

Compatibility

Compatibility specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Phone compatibilityAndroid 11.0 or later; more than 1.5 GB RAMAndroid 12.0 or later; more than 1.5 GB RAM
Companion appGalaxy Wearable; Samsung HealthGalaxy Wearable; Samsung Health
ColorsTitanium Silver; Titanium Gray; Titanium WhiteBlack; White

Additional specifications

Additional specifications specifications comparison
SpecificationSamsung Galaxy Watch UltraSamsung Galaxy Watch 8 Classic
Case materialTitaniumStainless steel
Release statusAvailable. Released 2024, July 24Available. Released 2025, July 25
Model numbersSM-L705F, SM-L705N, SM-L705USM-L500, SM-L505U
Card slotNoNo
CameraNoNo
3.5 mm headphone jackNoNo
USBNoNo
RadioNoNo
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 40, 66, 711, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 40, 66, 71
Network speedHSPA, LTEHSPA, LTE
SAR (EU)0.11 W/kg (head) 0.36 W/kg (body)0.03 W/kg (head) 0.67 W/kg (body)
Peak brightness—3,000 nits peak
SAR (US)—1.04 W/kg (head) 0.41 W/kg (body)
Additional durability features—Rotating bezel

Similarities

  • Both have 2 GB RAM.
  • Both are rated IP68.
  • Both have NFC.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both support eSIM.

In summary

For most buyers the Samsung Galaxy Watch Ultra is the better buy; the Samsung Galaxy Watch 8 Classic makes sense if you want more storage.

Back to compared products ↑

In-stock alternatives

Google Pixel Watch 4For Samsung Galaxy Watch UltraGoogle Pixel Watch 4View product ↗Samsung Galaxy Watch Ultra 2025For Samsung Galaxy Watch UltraSamsung Galaxy Watch Ultra 2025View product ↗OnePlus Watch 4For Samsung Galaxy Watch 8 ClassicOnePlus Watch 4View product ↗Samsung Galaxy Watch 9 40mmFor Samsung Galaxy Watch 8 ClassicSamsung Galaxy Watch 9 40mmView product ↗

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