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Wearable comparison

Samsung Galaxy Watch Ultra 2 47mm vs Apple Watch Series 12 42mm

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Samsung Galaxy Watch Ultra 2 47mm

Samsung Galaxy Watch Ultra 2 47mm

  • Screen: 498 × 498 pixels.
  • Qualcomm Snapdragon Wear Elite, 3 nm processor.
  • 2 GB RAM in this version.
  • 64 GB storage in this version.
  • Runs Wear OS 7; One UI 9 Watch.
KSh 62,000In Stock
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02
Apple Watch Series 12 42mm

Apple Watch Series 12 42mm

  • Apple S11 chip; 4-core Neural Engine processor.
  • 64 GB storage in this version.
  • Runs watchOS 27.
  • Wi-Fi 4 support.
  • Touchscreen for direct touch input.
KSh 64,000In Stock
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AmazFit FalconKSh 63,000
Amazfit T-Rex 3 ProKSh 55,000
WHOOP LifeKSh 55,500
Amazfit T-Rex Ultra 2KSh 85,000
Google Pixel Watch 5 45mmKSh 64,000
Apple Watch Series 12 46mmKSh 70,000
Huawei Watch D3KSh 75,000
2 of 4 products

Our quick verdict

The Apple Watch Series 12 42mm runs watchOS built around the iPhone, gives daily readiness scores, is lighter to wear all day and offers hypertension notifications, though it works only with an iPhone, while the Samsung Galaxy Watch Ultra 2 47mm lasts longer per charge (60 hours), has a brighter, sharper screen and is swimproof to 100 m.

Performance

Samsung Galaxy Watch Ultra 2 47mm
Qualcomm Snapdragon Wear Elite, 3 nm processor
Apple Watch Series 12 42mm
Apple S11 chip; 4-core Neural Engine processor

Software

Samsung Galaxy Watch Ultra 2 47mm
Runs Wear OS 7; One UI 9 Watch
Apple Watch Series 12 42mm
Runs watchOS 27

Battery life

Samsung Galaxy Watch Ultra 2 47mm
Up to 60 hours per charge
Apple Watch Series 12 42mm
Up to 24 hours per charge

Portability

Samsung Galaxy Watch Ultra 2 47mm
61.5 g
Apple Watch Series 12 42mm
32.2 g

Display

Samsung Galaxy Watch Ultra 2 47mm
1.52-inch OLED display
Apple Watch Series 12 42mm
OLED display, 326 ppi

Key differences

The main differences to help you choose.

Samsung Galaxy Watch Ultra 2 47mm

  • Rated for up to 60 hours per charge (vs 24).
  • Brighter display: up to 5,000 nits (vs 2,000).
  • Swimproof: water resistant to 100 m (vs 50 m).
  • Higher screen resolution: 498 × 498 (vs 374 × 446).

Apple Watch Series 12 42mm

  • Lighter: 32.2 g (vs 61.5 g).
  • Daily readiness scores.
  • Blood-pressure (hypertension) notifications.
  • Slimmer: 9.7 mm thick (vs 10.7 mm).
  • Depth gauge for snorkelling (to 6 m).

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 Ultra 2 47mmApple Watch Series 12 42mm
Battery lifeUp to 60 hours per chargeUp to 24 hours per charge
Display1.52-inch OLED displayOLED display, 326 ppi
PerformanceQualcomm Snapdragon Wear Elite processorApple S11 chip processor
SoftwareWear OS 7watchOS 27
ConnectionsBluetooth 5.3Wi-Fi 4, Bluetooth 5.3
Water resistance10 ATM50 m swimproof under ISO 22810:2010

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
Display1.52-inch Super AMOLEDAlways-On Retina LTPO3 wide-angle OLED
Screen resolution498 × 498 pixels42mm: 374 × 446 pixels, 970 mm² display area. 46mm: 416 × 496 pixels, 1196 mm² display area. Both: 326 ppi.
Display protectionSapphire crystalCeramic Shield 2 on aluminum cases; sapphire front crystal on titanium and ceramic cases
Display features5000 nits (peak)1 Hz refresh; up to 2,000 nits peak brightness; 1 nit minimum brightness

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
Network / cellularGSM / HSPA / LTE5G RedCap and LTE on GPS + Cellular models; international roaming supported
SIM / eSIMeSIMeSIM on GPS + Cellular models
Wi-FiWi-Fi 2.4 GHz + 5 GHzWi‑Fi 4 (802.11n), 2.4 GHz and 5 GHz
BluetoothBluetooth 5.3Bluetooth 5.3
NFCSupportedSupported; Apple Pay
Positioning / GNSSDual-frequency GPS, L1 + L5Precision L1 GPS; GLONASS; Galileo; QZSS; BeiDou
Ultra Wideband (UWB)—Second-generation Ultra Wideband chip

Identity & design

Identity & design specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
BrandSamsungApple
ModelSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 (42mm and 46mm configurations)
Announced2026, July 229 September 2026
Dimensions47.4 × 47.1 × 10.7 mm42mm: aluminum/titanium 42 × 37 × 9.7 mm; ceramic 43 × 37 × 9.85 mm. 46mm: aluminum/titanium 46 × 40 × 9.7 mm; ceramic 47 × 41 × 9.85 mm.
Weight61.5 g without band42mm: aluminum GPS 32.2 g, GPS + Cellular 31.5 g, titanium 36.5 g, ceramic Pearl White 41.7 g / Night Blue 42.8 g. 46mm: aluminum GPS 39.5 g, GPS + Cellular 38.6 g, titanium 44.9 g, ceramic Pearl White 51.3 g / Night Blue 52.9 g.
Build materialsTitanium caseAluminum, titanium or ceramic case, depending on configuration
Strap / bandMarine silicone; PeakForm hybrid; Trail fabricBand supplied; material and size depend on the selected configuration
Controls / buttonsTouchscreen; Home and Back buttons; customizable Quick ButtonDigital Crown with haptic feedback; side button; band-release button; single tap, double tap and wrist flick gestures
Wrist size—42mm: 130–200 mm; 46mm: 140–245 mm

Performance & software

Performance & software specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
ProcessorQualcomm Snapdragon Wear Elite, 3 nmApple S11 chip; 4-core Neural Engine
CPU5-core64-bit dual-core
RAM2 GB—
Storage64 GB64 GB
Operating systemWear OS 7; One UI 9 WatchwatchOS 27

Audio & communication

Audio & communication specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
SpeakerSupportedSpeaker with media playback
MicrophoneSupportedMicrophone with Voice Isolation
CallingBluetooth calling with a connected smartphone; standalone calling on LTE editionsBluetooth calling; cellular calling on GPS + Cellular models; international emergency calling

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
SensorsSamsung BioActive: optical heart-rate, electrical heart signal, bioelectrical impedance analysis; temperature; accelerometer; barometer; gyroscope; geomagnetic; light sensorHigh-g accelerometer; high dynamic-range gyroscope; compass; always-on altimeter; ambient-light sensor; second-generation electrical heart sensor; always-on optical heart sensor; blood-oxygen sensor; temperature sensor; depth gauge; water-temperature sensor
Health & wellness featuresHeart rate; SpO₂; ECG; body composition; temperature; stress; Vitals; Heart Health ScoreHeart rate and HRV; Blood Oxygen; ECG; respiratory rate; wrist temperature; Readiness and Vitals; high/low heart-rate and irregular-rhythm notifications; cycle tracking; hypertension notifications
Sleep trackingSleep-stage tracking; sleep-apnea risk detection; sleep VitalsSleep duration and stages; sleep score; sleep-apnea notifications
Sports / workout modesRunning; trail running; cycling; swimming; multisport and other automatic/manual workoutsRunning; hiking; cycling; pool and open-water swimming; skiing; snowboarding; rowing; paddling; golf; walking; HIIT; yoga; strength; dance; Pilates; Tai Chi; kickboxing; multisport and more
Training & outdoor featuresDaily Cardio Load; Fitness Index; workout and recovery guidanceCustom workouts and views; Training Load; heart-rate zones; VO₂ max; Race Route; Pacer; running dynamics; automatic track detection; offline maps, routes, waypoints and Backtrack
Safety & emergency features86 dB safety siren; automatic Fall Detection; Emergency SOS by five Home-button pressesEmergency SOS; international emergency calling; Fall Detection; Crash Detection; flashlight; Check In; noise monitoring; emergency waypoints
Diving / depth featuresAutomatic depth, dive-time and water-temperature trackingDepth gauge to 6 m; water-temperature sensor

Battery & durability

Battery & durability specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
Battery capacity800 mAh—
Battery lifeUp to 60 hours with AOD onUp to 24 hours normal use; up to 38 hours Low Power Mode; up to 10 hours outdoor workout
ChargingFast wireless charging, WPC-basedFast-charge capable; up to 80% in about 30 minutes; 15 minutes for up to 12 hours normal use; 5 minutes for up to 10 hours sleep tracking
Water resistance10 ATM; IP69K50 m swimproof under ISO 22810:2010
Durability / certificationsMIL-STD-810H; EN13319IP6X dust resistance

Compatibility

Compatibility specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
Phone compatibilityAndroid 13.0 or later; more than 1.5 GB RAM; Google Mobile ServicesiPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later
Companion appGalaxy Wearable; Samsung HealthApple Watch app on iPhone; Health and Fitness apps for associated data
ColorsTitanium Silver; Titanium GrayAluminum: Dark Bronze, Light Gold, Black, Space Gray; titanium: Radiant Gold, Natural; ceramic: Pearl White, Night Blue

Additional specifications

Additional specifications specifications comparison
SpecificationSamsung Galaxy Watch Ultra 2 47mmApple Watch Series 12 42mm
Case materialTitanium—
Peak brightness5,000 nits peakUp to 2,000 nits peak; 1 nit minimum
Charging time100% in 90 minutes; 40% in 30 minutesAbout 30 minutes to 80%; 15 minutes for up to 12 hours normal use; 5 minutes for up to 10 hours sleep tracking
Release statusAvailable. Released 2026, August 07Available. Released 2026, September 18
Model numbersSM-L715F, SM-L715UA3582, A3587
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 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66, 711, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71
Network speedHSPA, LTEHSPA, LTE, 5G
SAR (US)0.44 W/kg (body)—
SAR (EU)0.42 W/kg (body)—
Flashlight—Supported
Display material—LTPO3 wide-angle OLED
Pixels per inch—326 ppi
Cover / touchscreen—Supported
Packing list—Apple Watch Series 12; band; 1 m magnetic fast-charger to USB-C cable
5G bands—1, 2, 3, 5, 7, 8, 12, 14, 20, 25, 26, 28, 38, 40, 41, 66, 71 SA/NSA
Additional hardware features—Health Sensing System: third‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor, temperature sensor; Temperature sensing (0.01˚ accuracy); Media playback

Similarities

  • Both have NFC.
  • Both take ECG readings.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both support eSIM.
  • Both offer 64 GB of storage.

In summary

Get the Samsung Galaxy Watch Ultra 2 47mm if you want longer rated battery life and a brighter, sharper screen, or the Apple Watch Series 12 42mm if you would rather have daily readiness scores and a lighter watch for all-day wear.

Back to compared products ↑

In-stock alternatives

Google Pixel Watch 5 45mmFor Samsung Galaxy Watch Ultra 2 47mmGoogle Pixel Watch 5 45mmView product ↗WHOOP LifeFor Samsung Galaxy Watch Ultra 2 47mmWHOOP LifeView product ↗Apple Watch Series 12 46mmFor Apple Watch Series 12 42mmApple Watch Series 12 46mmView product ↗Apple Watch Ultra 3For Apple Watch Series 12 42mmApple Watch Ultra 3View product ↗

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