Product comparison · 2 smartwatches

Amazfit Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite) vs Amazfit T-Rex Ultra

39specifications compared
11differ
28identical
62known for one product only

Key differences

Display resolution
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):390 x 450 pixels
- T-Rex Ultra:454 x 454 pixels
Display diagonal
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):4.45 cm (1.75")
- T-Rex Ultra:3.53 cm (1.39")
Pixel density
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):341 ppi
- T-Rex Ultra:326 ppi
Shape
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):Rectangular
- T-Rex Ultra:Round
Water resistance
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):5 ATM
- T-Rex Ultra:10 ATM
Bluetooth version
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):5.2
- T-Rex Ultra:5.0
Headphone connectivity
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):Bluetooth
- T-Rex Ultra:No
Battery life (max)
- Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite):336 h
- T-Rex Ultra:1200 h

Side by side

Differences highlightedShow differences only

Comparison of Active, T-Rex Ultra
101 specifications	A Amazfit Active 4.45 cm (1.75") AMOLED Digital 390 x 450 pixels Touchscreen Black GPS (satellite) Model Active View product	B Amazfit T-Rex Ultra View product
Display3 differ
Display resolutionDiffers	390 x 450 pixels	454 x 454 pixels
Display diagonalDiffers	4.45 cm (1.75")	3.53 cm (1.39")
Display brightnessKnown for one	Unknown — not stated by the source	1000 cd/m²
Pixel densityDiffers	341 ppi	326 ppi
Colour displayKnown for one	Unknown — not stated by the source	Yes
Design3 differ
Watch case sizeKnown for one	Unknown — not stated by the source	47 mm
Watch case materialDiffers	Aluminium, Polycarbonate (PC)	Stainless steel
Lens materialKnown for one	Unknown — not stated by the source	Glass
ShapeDiffers	Rectangular	Round
Wrist size rangeKnown for one	Unknown — not stated by the source	140 - 205 mm
Strap lengthKnown for one	Unknown — not stated by the source	2.2 cm
Buckle colourKnown for one	Unknown — not stated by the source	Black
Colour nameKnown for one	Unknown — not stated by the source	Abyss Black
Magnetic charging connectorKnown for one	Unknown — not stated by the source	Yes
Protection featuresKnown for one	Unknown — not stated by the source	Water resistant
Water resistanceDiffers	5 ATM	10 ATM
Waterproof up toKnown for one	Unknown — not stated by the source	100 m
Performanceidentical
FM radioKnown for one	Unknown — not stated by the source	No
Mobile operating systems supportedKnown for one	Unknown — not stated by the source	Android 10.0, Android 11.0, Android 12.0, Android 13.0, Android 7.0, Android 7.1, Android 7.1.2, Android 8.0, Android 8.1, Android 9.0, iOS 12, iOS 13, iOS 13.4, iOS 14, iOS 14.5, iOS 15, iOS 16
Operating system installedKnown for one	Unknown — not stated by the source	Zepp OS
Built-in microphoneKnown for one	Yes	Unknown — not stated by the source
Built-in speaker(s)Known for one	Yes	Unknown — not stated by the source
RAM capacityKnown for one	32 MB	Unknown — not stated by the source
Featuresidentical
Heart rate measuringKnown for one	Unknown — not stated by the source	Automatic, Manual
Distance travelledKnown for one	Unknown — not stated by the source	Yes
Calories burnedKnown for one	Unknown — not stated by the source	Yes
GyroscopeKnown for one	Unknown — not stated by the source	Yes
Activity trackerKnown for one	Unknown — not stated by the source	Yes
Activity monitoringKnown for one	Unknown — not stated by the source	Yes
Alarm clockKnown for one	Unknown — not stated by the source	Yes
Ambient light sensorKnown for one	Unknown — not stated by the source	Yes
Barometric altimeterKnown for one	Unknown — not stated by the source	Yes
CalendarKnown for one	Unknown — not stated by the source	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
Firmware upgradeableKnown for one	Unknown — not stated by the source	Yes
Music controlKnown for one	Unknown — not stated by the source	Yes
Recommended activityKnown for one	Unknown — not stated by the source	Badminton, Baseball, Basketball, Boxing, Climbing, Cycling, Darts, Diving, Fishing, Fitness, Football, Golf, Gymnastics, Handball, Hiking, Hockey, Hunting, Motor sports, Pilates, Rowing, Running, Sailing, Skateboarding, Skiing, Surfing, Swimming, Taekwondo, Tennis, Triathlon, Volleyball, Walking, Yo
StopwatchKnown for one	Unknown — not stated by the source	Yes
TimerKnown for one	Unknown — not stated by the source	Yes
Virtual pacer functionKnown for one	Unknown — not stated by the source	Yes
Water temperature sensorKnown for one	Unknown — not stated by the source	Yes
AltimeterKnown for one	Unknown — not stated by the source	Yes
Country of originKnown for one	Unknown — not stated by the source	China
Military standardKnown for one	Unknown — not stated by the source	MIL-STD-810G
Supported applicationsKnown for one	Unknown — not stated by the source	Zepp App
Blood pressure monitorKnown for one	Yes	Unknown — not stated by the source
AccelerometerKnown for one	Yes	Unknown — not stated by the source
Vibrating motorKnown for one	Yes	Unknown — not stated by the source
Remote take pictureKnown for one	Yes	Unknown — not stated by the source
Skin temperature sensorKnown for one	Yes	Unknown — not stated by the source
Networkidentical
Mobile network connectionKnown for one	Unknown — not stated by the source	No
BeiDouKnown for one	Unknown — not stated by the source	Yes
GLONASSKnown for one	Unknown — not stated by the source	Yes
GalileoKnown for one	Unknown — not stated by the source	Yes
Quasi-Zenith Satellite System (QZSS)Known for one	Unknown — not stated by the source	Yes
Ports & interfaces2 differ
USB portKnown for one	Unknown — not stated by the source	No
Wi-FiKnown for one	Unknown — not stated by the source	Yes
Bluetooth versionDiffers	5.2	5.0
Headphone connectivityDiffers	Bluetooth	No
Power1 differ
Battery life (max)Differs	336 h	1200 h
Battery lifeKnown for one	Unknown — not stated by the source	20 day(s)
Battery life (GPS mode)Known for one	Unknown — not stated by the source	28 h
Battery life (power save mode)Known for one	Unknown — not stated by the source	600 h
Wireless chargingKnown for one	Yes	Unknown — not stated by the source
Battery1 differ
Battery capacityDiffers	300 mAh	500 mAh
Battery technologyKnown for one	Lithium Polymer (LiPo)	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	Unknown — not stated by the source	47.3 mm
DepthKnown for one	Unknown — not stated by the source	47.3 mm
ThicknessKnown for one	Unknown — not stated by the source	1.34 cm
WeightDiffers	24.13 g	89 g
Band widthKnown for one	2 cm	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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