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Product comparison · 2 smartwatches

Amazfit T-Rex Ultra 2 vs Hama 00178641 smartwatch / sport watch

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  • 30specifications compared
  • 17differ
  • 13identical
  • 62known for one product only

Key differences

  • Display type
    • Digital
    • Analog
  • Display resolution
    • 480 x 480 pixels
    • 466 x 466 pixels
  • Display diagonal
    • 129.5 cm (51")
    • 3.35 cm (1.32")
  • Display brightness
    • 3000 cd/m²
    • 600 cd/m²
  • Market positioning
    • Sport watch
    • Smartwatch
  • Watch case size
    • 51 mm
    • 43 mm
  • Watch case colour
    • Titanium
    • Gold
  • Band colour
    • Black, Brown
    • White

Side by side

Differences highlightedShow differences only
92 specifications
A

Amazfit

T-Rex Ultra 2View product
B

Hama

00178641 smartwatch / sport watch

Model 00178641

View product
Display4 differ
Display typeDiffersDigitalAnalog
Display resolutionDiffers480 x 480 pixels466 x 466 pixels
TouchscreenYesYes
Display diagonalDiffers129.5 cm (51")3.35 cm (1.32")
Display technologyAMOLEDAMOLED
Display brightnessDiffers3000 cd/m²600 cd/m²
Pixel densityKnown for one322 ppi
Watch glass typeKnown for oneSapphire
BacklightKnown for oneYes
Always-on displayKnown for oneYes
Design6 differ
Market positioningDiffersSport watchSmartwatch
Watch case sizeDiffers51 mm43 mm
Watch case colourDiffersTitaniumGold
Watch case materialDiffersTitanium, Glass Fiber Reinforced Polymer (GFRP)Plastic
Band colourDiffersBlack, BrownWhite
Band materialSiliconeSilicone
Band sizeKnown for oneOne Size
ShapeRoundRound
Wrist size rangeKnown for one145 - 215 mm
Magnetic charging connectorKnown for oneYes
Water resistanceDiffers10 ATM3 ATM
Waterproof up toKnown for one45 m
Minimum strap lengthKnown for one14.9 cm
Maximum strap lengthKnown for one22.2 cm
Suggested genderKnown for oneUnisex
International Protection (IP) codeKnown for oneIP68
Performance1 differ
Built-in microphoneKnown for oneYes
Built-in speaker(s)Known for oneYes
Built-in cameraKnown for oneNo
Mobile operating systems supportedDiffersAndroid 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 26Android 10.0, iOS 12
Operating system installedKnown for oneZepp OS
Featuresidentical
Heart rate monitorYesYes
Blood oxygen sensorYesYes
Sleep apnea detectionKnown for oneYes
AccelerometerKnown for oneYes
GyroscopeKnown for oneYes
Quality of sleepKnown for oneYes
Built-in speedometerKnown for oneYes
Alarm clockYesYes
Ambient light sensorKnown for oneYes
Barometric altimeterYesYes
Call notificationsKnown for oneYes
Electronic compassYesYes
Find my phone functionYesYes
Geomagnetic sensorKnown for oneYes
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
Distance travelledKnown for oneYes
Calories burnedKnown for oneYes
Activity trackerKnown for oneYes
Personal goalsKnown for oneYes
Activity monitoringKnown for oneYes
Training programmingKnown for oneYes
Training recommendationsKnown for oneYes
Virtual assistantKnown for oneGoogle Assistant & Apple Siri
Weather forecastKnown for oneYes
Vibrating alarm clockKnown for oneYes
Networkidentical
GPS (satellite)YesYes
Ports & interfaces1 differ
Wi-FiKnown for oneYes
Bluetooth versionDiffers5.25.3
Bluetooth Low Energy (BLE)Known for oneYes
Near Field Communication (NFC)Known for oneYes
USB portKnown for oneYes
BluetoothKnown for oneYes
Power1 differ
Battery typeBuilt-in batteryBuilt-in battery
Battery lifeDiffers30 day(s)6 day(s)
Battery life (GPS mode)Known for one177 h
Battery1 differ
Battery capacityDiffers870 mAh350 mAh
Battery technologyKnown for oneLithium Polymer (LiPo)
Softwareidentical
Sports activity appsKnown for oneStrava, RunKeeper, TrainingPeaks
Other featuresidentical
Number of sports modesKnown for one187
Weight & dimensions3 differ
WidthDiffers51 mm43 mm
Depth51 mm51 mm
ThicknessDiffers1.43 cm1.2 cm
WeightDiffers89.2 g37 g
Band widthKnown for one2 cm
Packaging contentidentical
Charging baseKnown for oneYes
ManualKnown for oneYes
Cables includedKnown for oneUSB Type-C
Packaging dataidentical
Package widthKnown for one194 mm
Package depthKnown for one73 mm
Package heightKnown for one37 mm
Package weightKnown for one227 g

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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