Product comparison · 2 smartwatches

Amazfit Balance 3 vs Amazfit T-Rex Ultra 2

60specifications compared
17differ
43identical
19known for one product only

Key differences

The Amazfit Balance 3 has 1 ppi more pixel density than the Amazfit T-Rex Ultra 2 (323 ppi vs 322 ppi). The Amazfit T-Rex Ultra 2 has 136 h more battery life (GPS mode) than the Amazfit Balance 3 (177 h vs 41 h). The Amazfit T-Rex Ultra 2 has 212 mAh more battery capacity than the Amazfit Balance 3 (870 mAh vs 658 mAh). Display diagonal: 3.81 cm (1.5") on the Amazfit Balance 3, 129.5 cm (51") on the Amazfit T-Rex Ultra 2. Watch case colour: Stainless steel on the Amazfit Balance 3, Titanium on the Amazfit T-Rex Ultra 2.

Display diagonal
- Balance 3:3.81 cm (1.5")
- T-Rex Ultra 2:129.5 cm (51")
Pixel density
- Balance 3:323 ppi
- T-Rex Ultra 2:322 ppi
Watch case colour
- Balance 3:Stainless steel
- T-Rex Ultra 2:Titanium
Band colour
- Balance 3:Black
- T-Rex Ultra 2:Black, Brown
Wrist size range
- Balance 3:140 - 210 mm
- T-Rex Ultra 2:145 - 215 mm
Battery life
- Balance 3:21 day(s)
- T-Rex Ultra 2:30 day(s)
Battery life (GPS mode)
- Balance 3:41 h
- T-Rex Ultra 2:177 h
Battery capacity
- Balance 3:658 mAh
- T-Rex Ultra 2:870 mAh

Side by side

Differences highlightedShow differences only

Comparison of Balance 3, T-Rex Ultra 2
79 specifications	A Amazfit Balance 3 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
Colour displayKnown for one	Yes	Unknown — not stated by the source
Display diameterKnown for one	4.48 cm	Unknown — not stated by the source
Watch glass type	Sapphire	Sapphire
BacklightKnown for one	Unknown — not stated by the source	Yes
Design4 differ
Market positioning	Sport watch	Sport watch
Watch case size	51 mm	51 mm
Watch case colourDiffers	Stainless steel	Titanium
Watch case materialDiffers	Stainless steel	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 rangeDiffers	140 - 210 mm	145 - 215 mm
Magnetic charging connector	Yes	Yes
Protection featuresKnown for one	Vibration proof, Water resistant	Unknown — not stated by the source
Water resistance	10 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 camera	No	No
FM radioKnown for one	No	Unknown — not stated by the source
Mobile operating systems supportedDiffers	Android 8.0, Android 8.1, Android 9.0, Android 10.0, Android 11.0, Android 12.0, Android 13.0, Android 14.0, Android 15, Android 16, iOS 17, iOS 18, iOS 26	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 installed	Zepp OS	Zepp OS
Flash memoryKnown for one	64 GB	Unknown — not stated by the source
Features1 differ
Heart rate monitor	Yes	Yes
Blood oxygen sensor	Yes	Yes
Accelerometer	Yes	Yes
Gyroscope	Yes	Yes
Quality of sleep	Yes	Yes
Vibrating motorKnown for one	Yes	Unknown — not stated by the source
Personal info management (PIM)Known for one	Menstrual cycle	Unknown — not stated by the source
Alarm clock	Yes	Yes
Ambient light sensor	Yes	Yes
Barometric altimeter	Yes	Yes
Call notifications	Yes	Yes
Find my phone function	Yes	Yes
Geomagnetic sensor	Yes	Yes
Music controlKnown for one	Yes	Unknown — not stated by the source
Recommended activityDiffers	Walking, Swimming, Running, Hiking, Climbing, Fishing, Hunting, Skateboarding, Fitness, Dance, Boxing, Taekwondo, Kickboxing, Golf, Basketball, Baseball, Hockey, Tennis, Handball, Sailing, Rowing, Diving, Skiing, Snowboarding, Darts	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 notifications	Yes	Yes
Skin temperature sensor	Yes	Yes
Stopwatch	Yes	Yes
Stress monitoring function	Yes	Yes
Virtual pacer function	Yes	Yes
Weather display	Yes	Yes
World time function	Yes	Yes
ThermometerKnown for one	Yes	Unknown — not stated by the source
Sleep apnea detectionKnown for one	Unknown — not stated by the source	Yes
Built-in speedometerKnown for one	Unknown — not stated by the source	Yes
Electronic compassKnown for one	Unknown — not stated by the source	Yes
Interval trainingKnown for one	Unknown — not stated by the source	Yes
Smart notificationsKnown for one	Unknown — not stated by the source	Yes
Sun & moon informationKnown for one	Unknown — not stated by the source	Yes
Networkidentical
GPS (satellite)	Yes	Yes
Ports & interfacesidentical
Wi-Fi	Yes	Yes
BluetoothKnown for one	Yes	Unknown — not stated by the source
Bluetooth version	5.2	5.2
Bluetooth Low Energy (BLE)	Yes	Yes
Near Field Communication (NFC)	Yes	Yes
Power2 differ
Battery type	Built-in battery	Built-in battery
Battery lifeDiffers	21 day(s)	30 day(s)
Battery life (GPS mode)Differs	41 h	177 h
Battery1 differ
Battery capacityDiffers	658 mAh	870 mAh
Software1 differ
Sports activity appsDiffers	Strava, TrainingPeaks	Strava, RunKeeper, TrainingPeaks
Other features1 differ
Number of sports modesDiffers	180	187
Weight & dimensions4 differ
WidthDiffers	51.4 mm	51 mm
DepthDiffers	51.4 mm	51 mm
ThicknessDiffers	1.46 cm	1.43 cm
WeightDiffers	62 g	89.2 g
Band widthKnown for one	2.2 cm	Unknown — not stated by the source
Packaging contentidentical
Charging base	Yes	Yes
Manual	Yes	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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