Product comparison · 2 smartwatches

Amazfit T-Rex Ultra 2 vs Amazfit W2558GL2N smartwatch / sport watch

34specifications compared
13differ
21identical
40known for one product only

Key differences

Display resolution
- T-Rex Ultra 2:480 x 480 pixels
- W2558GL2N smartwatch / sport watch:466 x 466 pixels
Display diagonal
- T-Rex Ultra 2:129.5 cm (51")
- W2558GL2N smartwatch / sport watch:3.35 cm (1.32")
Pixel density
- T-Rex Ultra 2:322 ppi
- W2558GL2N smartwatch / sport watch:353 ppi
Market positioning
- T-Rex Ultra 2:Sport watch
- W2558GL2N smartwatch / sport watch:Smartwatch
Watch case colour
- T-Rex Ultra 2:Titanium
- W2558GL2N smartwatch / sport watch:Silver
Band colour
- T-Rex Ultra 2:Black, Brown
- W2558GL2N smartwatch / sport watch:Blue
Water resistance
- T-Rex Ultra 2:10 ATM
- W2558GL2N smartwatch / sport watch:5 ATM
Bluetooth version
- T-Rex Ultra 2:5.2
- W2558GL2N smartwatch / sport watch:5.3

Side by side

Differences highlightedShow differences only

Comparison of T-Rex Ultra 2, W2558GL2N
74 specifications	A Amazfit T-Rex Ultra 2 View product	B Amazfit W2558GL2N smartwatch / sport watch Model W2558GL2N View product
Display3 differ
Display type	Digital	Digital
Display resolutionDiffers	480 x 480 pixels	466 x 466 pixels
Touchscreen	Yes	Yes
Display diagonalDiffers	129.5 cm (51")	3.35 cm (1.32")
Display technology	AMOLED	AMOLED
Display brightness	3000 cd/m²	3000 cd/m²
Pixel densityDiffers	322 ppi	353 ppi
Watch glass type	Sapphire	Sapphire
BacklightKnown for one	Yes	Unknown — not stated by the source
Colour displayKnown for one	Unknown — not stated by the source	Yes
Design5 differ
Market positioningDiffers	Sport watch	Smartwatch
Watch case sizeKnown for one	51 mm	Unknown — not stated by the source
Watch case colourDiffers	Titanium	Silver
Watch case materialDiffers	Titanium, Glass Fiber Reinforced Polymer (GFRP)	Aluminium, Stainless steel
Band colourDiffers	Black, Brown	Blue
Band material	Silicone	Silicone
Band sizeKnown for one	One Size	Unknown — not stated by the source
Shape	Round	Round
Wrist size rangeKnown for one	145 - 215 mm	Unknown — not stated by the source
Magnetic charging connector	Yes	Yes
Water resistanceDiffers	10 ATM	5 ATM
Waterproof up toKnown for one	45 m	Unknown — not stated by the source
Performanceidentical
Built-in microphone	Yes	Yes
Built-in speaker(s)	Yes	Yes
Built-in camera	No	No
Mobile operating systems supportedKnown for one	Android 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	Unknown — not stated by the source
Operating system installedKnown for one	Zepp OS	Unknown — not stated by the source
Featuresidentical
Heart rate monitor	Yes	Yes
Blood oxygen sensorKnown for one	Yes	Unknown — not stated by the source
Sleep apnea detectionKnown for one	Yes	Unknown — not stated by the source
Accelerometer	Yes	Yes
Gyroscope	Yes	Yes
Quality of sleepKnown for one	Yes	Unknown — not stated by the source
Built-in speedometerKnown for one	Yes	Unknown — not stated by the source
Alarm clockKnown for one	Yes	Unknown — not stated by the source
Ambient light sensor	Yes	Yes
Barometric altimeter	Yes	Yes
Call notificationsKnown for one	Yes	Unknown — not stated by the source
Electronic compassKnown for one	Yes	Unknown — not stated by the source
Find my phone functionKnown for one	Yes	Unknown — not stated by the source
Geomagnetic sensor	Yes	Yes
Interval trainingKnown for one	Yes	Unknown — not stated by the source
Recommended activityKnown for one	Running, 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	Unknown — not stated by the source
SMS notificationsKnown for one	Yes	Unknown — not stated by the source
Skin temperature sensor	Yes	Yes
Smart notificationsKnown for one	Yes	Unknown — not stated by the source
StopwatchKnown for one	Yes	Unknown — not stated by the source
Stress monitoring functionKnown for one	Yes	Unknown — not stated by the source
Sun & moon informationKnown for one	Yes	Unknown — not stated by the source
Virtual pacer functionKnown for one	Yes	Unknown — not stated by the source
Weather displayKnown for one	Yes	Unknown — not stated by the source
World time functionKnown for one	Yes	Unknown — not stated by the source
Number of gyroscope axisKnown for one	Unknown — not stated by the source	6
Networkidentical
GPS (satellite)	Yes	Yes
Ports & interfaces1 differ
Wi-FiKnown for one	Yes	Unknown — not stated by the source
Bluetooth versionDiffers	5.2	5.3
Bluetooth Low Energy (BLE)Known for one	Yes	Unknown — not stated by the source
Near Field Communication (NFC)	Yes	Yes
BluetoothKnown for one	Unknown — not stated by the source	Yes
Power2 differ
Battery type	Built-in battery	Built-in battery
Battery lifeDiffers	30 day(s)	12 day(s)
Battery life (GPS mode)Differs	177 h	24 h
Charging timeKnown for one	Unknown — not stated by the source	2 h
Battery1 differ
Battery capacityDiffers	870 mAh	365 mAh
Softwareidentical
Sports activity appsKnown for one	Strava, RunKeeper, TrainingPeaks	Unknown — not stated by the source
Other featuresidentical
Number of sports modesKnown for one	187	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	51 mm	Unknown — not stated by the source
DepthKnown for one	51 mm	Unknown — not stated by the source
ThicknessKnown for one	1.43 cm	Unknown — not stated by the source
WeightDiffers	89.2 g	38 g
Band widthKnown for one	Unknown — not stated by the source	2 cm
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	45 x 45 x 11 mm
Packaging contentidentical
Charging baseKnown for one	Yes	Unknown — not stated by the source
ManualKnown for one	Yes	Unknown — not stated by the source

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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