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Product comparison · 2 smartwatches

Amazfit T-Rex Ultra 2 vs Cellularline ION ULTRA SMARTWATCH BLUETOOTH SQUARE

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  • 24specifications compared
  • 12differ
  • 12identical
  • 70known for one product only

Key differences

The Amazfit T-Rex Ultra 2 has 40 mm more width than the Cellularline ION ULTRA SMARTWATCH BLUETOOTH SQUARE (51 mm vs 11 mm). The Amazfit T-Rex Ultra 2 has 13.5 mm more depth than the Cellularline ION ULTRA SMARTWATCH BLUETOOTH SQUARE (51 mm vs 37.5 mm). The Cellularline ION ULTRA SMARTWATCH BLUETOOTH SQUARE has 1.07 cm more thickness than the Amazfit T-Rex Ultra 2 (2.5 cm vs 1.43 cm). Only the Amazfit T-Rex Ultra 2 has GPS (satellite). Only the Amazfit T-Rex Ultra 2 has Wi-Fi.

  • Display diagonal
    • 129.5 cm (51")
    • 4.98 cm (1.96")
  • Market positioning
    • Sport watch
    • Smartwatch
  • Watch case colour
    • Titanium
    • Black
  • Band colour
    • Black, Brown
    • Black
  • Shape
    • Round
    • Rectangular
  • GPS (satellite)
    • Yes
    • No
  • Wi-Fi
    • Yes
    • No
  • Battery life
    • 30 day(s)
    • 5 day(s)

Side by side

Differences highlightedShow differences only
94 specifications
A

Amazfit

T-Rex Ultra 2View product
B

Cellularline

ION ULTRA SMARTWATCH BLUETOOTH SQUARE

Model BTIONWATCHULTRAK

View product
Display1 differ
Display typeDigitalDigital
Display resolutionKnown for one480 x 480 pixels
TouchscreenYesYes
Display diagonalDiffers129.5 cm (51")4.98 cm (1.96")
Display technologyAMOLEDAMOLED
Display brightnessKnown for one3000 cd/m²
Pixel densityKnown for one322 ppi
Watch glass typeKnown for oneSapphire
BacklightKnown for oneYes
Colour displayKnown for oneYes
Design4 differ
Market positioningDiffersSport watchSmartwatch
Watch case sizeKnown for one51 mm
Watch case colourDiffersTitaniumBlack
Watch case materialKnown for oneTitanium, Glass Fiber Reinforced Polymer (GFRP)
Band colourDiffersBlack, BrownBlack
Band materialKnown for oneSilicone
Band sizeKnown for oneOne Size
ShapeDiffersRoundRectangular
Wrist size rangeKnown for one145 - 215 mm
Magnetic charging connectorKnown for oneYes
Water resistanceKnown for one10 ATM
Waterproof up toKnown for one45 m
International Protection (IP) codeKnown for oneIP68
Product colourKnown for oneBlack
Protection featuresKnown for oneWaterproof
Removable strapKnown for oneYes
Performanceidentical
Built-in microphoneYesYes
Built-in speaker(s)YesYes
Built-in cameraNoNo
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 installedKnown for oneZepp OS
Flash memoryKnown for one0.00064 GB
Featuresidentical
Heart rate monitorYesYes
Blood oxygen sensorYesYes
Sleep apnea detectionKnown for oneYes
AccelerometerKnown for oneYes
GyroscopeKnown for oneYes
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 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
Blood pressure monitorKnown for oneYes
Calories burnedKnown for oneYes
Vibrating motorKnown for oneYes
Network1 differ
GPS (satellite)DiffersYesNo
Mobile network connectionKnown for oneNo
Ports & interfaces1 differ
Wi-FiDiffersYesNo
Bluetooth version5.25.2
Bluetooth Low Energy (BLE)Known for oneYes
Near Field Communication (NFC)Known for oneYes
USB portKnown for oneNo
BluetoothKnown for oneYes
Power1 differ
Battery typeBuilt-in batteryBuilt-in battery
Battery lifeDiffers30 day(s)5 day(s)
Battery life (GPS mode)Known for one177 h
Battery life (max)Known for one120 h
Wireless chargingKnown for oneNo
Batteryidentical
Battery capacityKnown for one870 mAh
Battery weightKnown for one43 g
Softwareidentical
Sports activity appsKnown for oneStrava, RunKeeper, TrainingPeaks
Other featuresidentical
Number of sports modesKnown for one187
Weight & dimensions4 differ
WidthDiffers51 mm11 mm
DepthDiffers51 mm37.5 mm
ThicknessDiffers1.43 cm2.5 cm
WeightDiffers89.2 g146 g
HeightKnown for one25 mm
Packaging contentidentical
Charging baseKnown for oneYes
ManualKnown for oneYes
AC adapter includedKnown for oneNo
Batteries includedKnown for oneNo
Certificatesidentical
UN numberKnown for oneUN3481
Technical detailsidentical
Cable lengthKnown for one0.15 m
Radio Equipment Directive (RED)Known for oneNo
Warranty periodKnown for one2 year(s)
Packaging dataidentical
Package widthKnown for one32 mm
Package depthKnown for one90 mm
Package heightKnown for one162 mm
Package weightKnown for one152 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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