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Product comparison · 2 smartwatches

Amazfit T-Rex Ultra 2 vs Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch

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  • 34specifications compared
  • 17differ
  • 17identical
  • 65known for one product only

Key differences

The Amazfit T-Rex Ultra 2 has 2,400 cd/m² more display brightness than the Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch (3000 cd/m² vs 600 cd/m²). The Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch has 5 ppi more pixel density than the Amazfit T-Rex Ultra 2 (327 ppi vs 322 ppi). The Amazfit T-Rex Ultra 2 has 4 mm more watch case size than the Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch (51 mm vs 47 mm). Display diagonal: 129.5 cm (51") on the Amazfit T-Rex Ultra 2, 3.81 cm (1.5") on the Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch. Market positioning: Sport watch on the Amazfit T-Rex Ultra 2, Smartwatch on the Samsung Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch.

  • Display diagonal
    • 129.5 cm (51")
    • 3.81 cm (1.5")
  • Display brightness
    • 3000 cd/m²
    • 600 cd/m²
  • Pixel density
    • 322 ppi
    • 327 ppi
  • Market positioning
    • Sport watch
    • Smartwatch
  • Watch case size
    • 51 mm
    • 47 mm
  • Watch case colour
    • Titanium
    • Titanium, White
  • Band colour
    • Black, Brown
    • White
  • Operating system installed
    • Zepp OS
    • Wear OS

Side by side

Differences highlightedShow differences only
99 specifications
A

Amazfit

T-Rex Ultra 2View product
B

Samsung

Galaxy Watch Ultra SM-L705FAW2PHE smartwatch / sport watch

Model SM-L705FAW2PHE

View product
Display3 differ
Display typeDigitalDigital
Display resolution480 x 480 pixels480 x 480 pixels
TouchscreenYesYes
Display diagonalDiffers129.5 cm (51")3.81 cm (1.5")
Display technologyAMOLEDAMOLED
Display brightnessDiffers3000 cd/m²600 cd/m²
Pixel densityDiffers322 ppi327 ppi
Watch glass typeKnown for oneSapphire
BacklightKnown for oneYes
Display technology marketing nameKnown for oneSuper AMOLED
Always-on displayKnown for oneYes
Colour displayKnown for oneYes
Display number of coloursKnown for one16 million colours
Design5 differ
Market positioningDiffersSport watchSmartwatch
Watch case sizeDiffers51 mm47 mm
Watch case colourDiffersTitaniumTitanium, White
Watch case materialDiffersTitanium, Glass Fiber Reinforced Polymer (GFRP)Titanium
Band colourDiffersBlack, BrownWhite
Band materialKnown for oneSilicone
Band sizeKnown for oneOne Size
ShapeRoundRound
Wrist size rangeKnown for one145 - 215 mm
Magnetic charging connectorKnown for oneYes
Water resistance10 ATM10 ATM
Waterproof up toKnown for one45 m
Closure typeKnown for oneDouble prong strap buckle
International Protection (IP) codeKnown for oneIP68
Performance1 differ
Built-in microphoneYesYes
Built-in speaker(s)YesYes
Built-in cameraKnown for oneNo
Mobile operating systems supportedKnown for oneAndroid 7.0, Android 7.1, Android 7.1.2, Android 8.0, Android 8.1, Android 9.0, Android 10, Android 10.0, Android 11.0, Android 12.0, Android 13.0, Android 14.0, Android 15, Android 16, iOS 15, iOS 16, iOS 17, iOS 18, iOS 26
Operating system installedDiffersZepp OSWear OS
RAM capacityKnown for one2000 MB
Flash memoryKnown for one64 GB
Featuresidentical
Heart rate monitorYesYes
Blood oxygen sensorKnown for oneYes
Sleep apnea detectionKnown for oneYes
AccelerometerYesYes
GyroscopeYesYes
Quality of sleepYesYes
Built-in speedometerKnown for oneYes
Alarm clockKnown for oneYes
Ambient light sensorKnown for oneYes
Barometric altimeterKnown for oneYes
Call notificationsKnown for oneYes
Electronic compassKnown for oneYes
Find my phone functionKnown for oneYes
Geomagnetic sensorYesYes
Interval trainingKnown for oneYes
Recommended activityKnown for oneRunning, Cycling, Walking, Swimming, Climbing, Hiking, Fishing, Hunting, Skateboarding, Motor sports, Yoga, Pilates, HIIT, Gymnastics, Dance, Boxing, Kickboxing, Hockey, Football, Basketball, Volleyball, Tennis, Handball, Golf, Skiing, Diving
SMS notificationsKnown for oneYes
Skin temperature sensorKnown for oneYes
Smart notificationsKnown for oneYes
StopwatchKnown for oneYes
Stress monitoring functionKnown for oneYes
Sun & moon informationKnown for oneYes
Virtual pacer functionKnown for oneYes
Weather displayKnown for oneYes
World time functionKnown for oneYes
Heart rate sensor typeKnown for oneOptical
Activity trackerKnown for oneYes
Audio formats supportedKnown for one3GA, AAC, AMR, AWB, M4A, MP3, OGA, OGG, WAV
Virtual assistantKnown for oneSamsung Bixby
BarometerKnown for oneYes
Military standardKnown for oneMIL-STD-810H
Networkidentical
GPS (satellite)YesYes
Mobile network connectionKnown for oneYes
Mobile network generationKnown for one4G
3G standardsKnown for oneUMTS, WCDMA
4G standardKnown for oneLTE-TDD & LTE-FDD
3G bands supportedKnown for one850,900,1900,2100 MHz
4G bands supportedKnown for one600,700,800,850,900,1800,1900,2100,2600 MHz
SIM card typeKnown for oneeSIM
BeiDouKnown for oneYes
GLONASSKnown for oneYes
GalileoKnown for oneYes
Ports & interfaces1 differ
Wi-FiYesYes
Bluetooth versionDiffers5.25.3
Bluetooth Low Energy (BLE)Known for oneYes
Near Field Communication (NFC)YesYes
Wi-Fi standardsKnown for one802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n)
BluetoothKnown for oneYes
Power1 differ
Battery typeBuilt-in batteryBuilt-in battery
Battery lifeKnown for one30 day(s)
Battery life (GPS mode)Differs177 h48 h
Battery life (power save mode)Known for one100 h
Charging timeKnown for one1.6 h
Battery1 differ
Battery capacityDiffers870 mAh590 mAh
Software1 differ
Sports activity appsDiffersStrava, RunKeeper, TrainingPeaksSamsung Health
Other featuresidentical
Number of sports modesKnown for one187
Weight & dimensions4 differ
WidthDiffers51 mm47.1 mm
DepthDiffers51 mm47.4 mm
ThicknessDiffers1.43 cm1.21 cm
WeightDiffers89.2 g60.5 g
Packaging contentidentical
Charging baseKnown for oneYes
ManualKnown for oneYes
Processoridentical
Processor manufacturerKnown for oneSamsung
Processor modelKnown for oneExynos W1000
Processor coresKnown for one5

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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