Product comparison · 2 smartwatches

Amazfit Active Max vs Amazfit T-Rex Ultra 2

35specifications compared
14differ
21identical
41known for one product only

Key differences

Display diagonal
- Active Max:3.81 cm (1.5")
- T-Rex Ultra 2:129.5 cm (51")
Pixel density
- Active Max:323 ppi
- T-Rex Ultra 2:322 ppi
Market positioning
- Active Max:Smartwatch
- T-Rex Ultra 2:Sport watch
Watch case colour
- Active Max:Black
- T-Rex Ultra 2:Titanium
Band colour
- Active Max:Black
- T-Rex Ultra 2:Black, Brown
Water resistance
- Active Max:5 ATM
- T-Rex Ultra 2:10 ATM
Bluetooth version
- Active Max:5.3
- T-Rex Ultra 2:5.2
Battery life
- Active Max:24 day(s)
- T-Rex Ultra 2:30 day(s)

Side by side

Differences highlightedShow differences only

Comparison of Active Max, T-Rex Ultra 2
76 specifications	A Amazfit Active Max View product	B Amazfit T-Rex Ultra 2 View product
Display2 differ
Display type	Digital	Digital
Display resolution	480 x 480 pixels	480 x 480 pixels
Touchscreen	Yes	Yes
Display diagonalDiffers	3.81 cm (1.5")	129.5 cm (51")
Display technology	AMOLED	AMOLED
Display brightness	3000 cd/m²	3000 cd/m²
Pixel densityDiffers	323 ppi	322 ppi
Watch glass typeKnown for one	Unknown — not stated by the source	Sapphire
BacklightKnown for one	Unknown — not stated by the source	Yes
Colour displayKnown for one	Yes	Unknown — not stated by the source
Display number of coloursKnown for one	16 million colours	Unknown — not stated by the source
Design5 differ
Market positioningDiffers	Smartwatch	Sport watch
Watch case sizeKnown for one	Unknown — not stated by the source	51 mm
Watch case colourDiffers	Black	Titanium
Watch case materialDiffers	Aluminium, Plastic	Titanium, Glass Fiber Reinforced Polymer (GFRP)
Band colourDiffers	Black	Black, Brown
Band material	Silicone	Silicone
Band size	One Size	One Size
Shape	Round	Round
Wrist size rangeKnown for one	Unknown — not stated by the source	145 - 215 mm
Magnetic charging connector	Yes	Yes
Water resistanceDiffers	5 ATM	10 ATM
Waterproof up toKnown for one	Unknown — not stated by the source	45 m
Performance1 differ
Built-in microphone	Yes	Yes
Built-in speaker(s)	Yes	Yes
Built-in cameraKnown for one	Unknown — not stated by the source	No
Mobile operating systems supportedDiffers	Android, iOS	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
Operating system installedKnown for one	Unknown — not stated by the source	Zepp OS
RAM capacityKnown for one	64 MB	Unknown — not stated by the source
Flash memoryKnown for one	4 GB	Unknown — not stated by the source
Featuresidentical
Heart rate monitor	Yes	Yes
Blood oxygen sensorKnown for one	Unknown — not stated by the source	Yes
Sleep apnea detectionKnown for one	Unknown — not stated by the source	Yes
Accelerometer	Yes	Yes
Gyroscope	Yes	Yes
Quality of sleepKnown for one	Unknown — not stated by the source	Yes
Built-in speedometerKnown for one	Unknown — not stated by the source	Yes
Alarm clockKnown for one	Unknown — not stated by the source	Yes
Ambient light sensor	Yes	Yes
Barometric altimeter	Yes	Yes
Call notificationsKnown for one	Unknown — not stated by the source	Yes
Electronic compassKnown for one	Unknown — not stated by the source	Yes
Find my phone functionKnown for one	Unknown — not stated by the source	Yes
Geomagnetic sensor	Yes	Yes
Interval trainingKnown for one	Unknown — not stated by the source	Yes
Recommended activityKnown for one	Unknown — not stated by the source	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
SMS notificationsKnown for one	Unknown — not stated by the source	Yes
Skin temperature sensor	Yes	Yes
Smart notificationsKnown for one	Unknown — not stated by the source	Yes
StopwatchKnown for one	Unknown — not stated by the source	Yes
Stress monitoring functionKnown for one	Unknown — not stated by the source	Yes
Sun & moon informationKnown for one	Unknown — not stated by the source	Yes
Virtual pacer functionKnown for one	Unknown — not stated by the source	Yes
Weather displayKnown for one	Unknown — not stated by the source	Yes
World time functionKnown for one	Unknown — not stated by the source	Yes
Networkidentical
GPS (satellite)Known for one	Unknown — not stated by the source	Yes
Ports & interfaces1 differ
Wi-FiKnown for one	Unknown — not stated by the source	Yes
Bluetooth versionDiffers	5.3	5.2
Bluetooth Low Energy (BLE)	Yes	Yes
Near Field Communication (NFC)	Yes	Yes
BluetoothKnown for one	Yes	Unknown — not stated by the source
Power1 differ
Battery type	Built-in battery	Built-in battery
Battery lifeDiffers	24 day(s)	30 day(s)
Battery life (GPS mode)Known for one	Unknown — not stated by the source	177 h
Charging timeKnown for one	2 h	Unknown — not stated by the source
Battery1 differ
Battery capacityDiffers	658 mAh	870 mAh
Battery technologyKnown for one	Lithium Polymer (LiPo)	Unknown — not stated by the source
Softwareidentical
Sports activity appsKnown for one	Unknown — not stated by the source	Strava, RunKeeper, TrainingPeaks
Other featuresidentical
Number of sports modesKnown for one	Unknown — not stated by the source	187
Weight & dimensions3 differ
WidthDiffers	48.5 mm	51 mm
DepthDiffers	48.5 mm	51 mm
ThicknessDiffers	1.22 cm	1.43 cm
WeightKnown for one	Unknown — not stated by the source	89.2 g
Band widthKnown for one	2.2 cm	Unknown — not stated by the source
Packaging contentidentical
Charging baseKnown for one	Unknown — not stated by the source	Yes
ManualKnown for one	Unknown — not stated by the source	Yes

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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