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Product comparison · 2 smartwatches

Amazfit GTR 3 Pro + TWS UP vs Amazfit T-Rex Ultra 2

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  • 37specifications compared
  • 17differ
  • 20identical
  • 49known for one product only

Key differences

The Amazfit GTR 3 Pro + TWS UP has 9 ppi more pixel density than the Amazfit T-Rex Ultra 2 (331 ppi vs 322 ppi). The Amazfit T-Rex Ultra 2 has 5 mm more watch case size than the Amazfit GTR 3 Pro + TWS UP (51 mm vs 46 mm). The Amazfit T-Rex Ultra 2 has 5 ATM more water resistance than the Amazfit GTR 3 Pro + TWS UP (10 ATM vs 5 ATM). Display diagonal: 3.68 cm (1.45") on the Amazfit GTR 3 Pro + TWS UP, 129.5 cm (51") on the Amazfit T-Rex Ultra 2. Market positioning: Smartwatch on the Amazfit GTR 3 Pro + TWS UP, Sport watch on the Amazfit T-Rex Ultra 2.

  • Display diagonal
    • 3.68 cm (1.45")
    • 129.5 cm (51")
  • Pixel density
    • 331 ppi
    • 322 ppi
  • Market positioning
    • Smartwatch
    • Sport watch
  • Watch case size
    • 46 mm
    • 51 mm
  • Watch case colour
    • Black
    • Titanium
  • Band colour
    • Black
    • Black, Brown
  • Wrist size range
    • 155 - 218 mm
    • 145 - 215 mm
  • Water resistance
    • 5 ATM
    • 10 ATM

Side by side

Differences highlightedShow differences only
86 specifications
A

Amazfit

GTR 3 Pro + TWS UPView product
B

Amazfit

T-Rex Ultra 2View product
Display2 differ
Display diagonalDiffers3.68 cm (1.45")129.5 cm (51")
Display brightnessKnown for one3000 cd/m²
Pixel densityDiffers331 ppi322 ppi
Watch glass typeKnown for oneSapphire
BacklightKnown for oneYes
Colour displayKnown for oneYes
Design7 differ
Market positioningDiffersSmartwatchSport watch
Watch case sizeDiffers46 mm51 mm
Watch case colourDiffersBlackTitanium
Watch case materialDiffersAluminiumTitanium, Glass Fiber Reinforced Polymer (GFRP)
Band colourDiffersBlackBlack, Brown
Band materialKnown for oneSilicone
Band sizeKnown for oneOne Size
Wrist size rangeDiffers155 - 218 mm145 - 215 mm
Magnetic charging connectorKnown for oneYes
Water resistanceDiffers5 ATM10 ATM
Waterproof up toKnown for one45 m
Maximum strap lengthKnown for one21.8 cm
Closure typeKnown for oneSingle prong strap buckle
Protection featuresKnown for oneWaterproof
Performance1 differ
Mobile operating systems supportedDiffersAndroid 10, Android 10.0, Android 7.0, Android 7.1, Android 7.1.2, Android 8.0, Android 9.0, iOS 12, iOS 13, iOS 14.5Android 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
FM radioKnown for oneNo
Featuresidentical
Sleep apnea detectionKnown for oneYes
Quality of sleepKnown for oneYes
Built-in speedometerKnown for oneYes
Alarm clockKnown for oneYes
Barometric altimeterKnown for oneYes
Call notificationsKnown for oneYes
Electronic compassKnown for oneYes
Find my phone functionKnown 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
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
Caller IDKnown for oneYes
Clock modeKnown for one12h/24h
BarometerKnown for oneYes
Networkidentical
Mobile network connectionKnown for oneNo
BeiDouKnown for oneYes
GLONASSKnown for oneYes
GalileoKnown for oneYes
Quasi-Zenith Satellite System (QZSS)Known for oneYes
Ports & interfaces1 differ
Bluetooth versionDiffers5.05.2
Bluetooth Low Energy (BLE)Known for oneYes
Near Field Communication (NFC)Known for oneYes
USB portKnown for oneNo
Wi-Fi standardsKnown for one802.11b, 802.11g, Wi-Fi 4 (802.11n)
Headphone connectivityKnown for oneBluetooth
Power1 differ
Battery lifeKnown for one30 day(s)
Battery life (GPS mode)Differs35 h177 h
Charging timeKnown for one2.5 h
Battery1 differ
Battery capacityDiffers450 mAh870 mAh
Softwareidentical
Sports activity appsKnown for oneStrava, RunKeeper, TrainingPeaks
Other featuresidentical
Number of sports modesKnown for one187
Weight & dimensions4 differ
WidthDiffers46 mm51 mm
DepthDiffers46 mm51 mm
ThicknessDiffers1.07 cm1.43 cm
WeightDiffers32 g89.2 g
Band widthKnown for one2.2 cm
Packaging contentidentical
Charging baseKnown for oneYes
ManualKnown for oneYes

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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