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Wearable comparison

Amazfit T-Rex Ultra 2 vs Amazfit Balance 3

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Amazfit T-Rex Ultra 2

Amazfit T-Rex Ultra 2

  • 89.2 g.
  • Screen: 480 × 480 pixels, 322 ppi.
  • Wi-Fi 4 support.
  • 870 mAh battery capacity.
  • Up to 64 GB storage.
KSh 85,000Out of Stock
02
Amazfit Balance 3

Amazfit Balance 3

  • Screen: 480 × 480 pixels; 323 ppi.
  • 64 GB storage in this version.
  • Runs Zepp OS 6.
  • 658 mAh battery capacity.
  • Bluetooth 5.2.
KSh 48,000In Stock
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Apple Watch Ultra 3KSh 90,000
Samsung Galaxy Watch Ultra 2 47mmKSh 62,000
Apple Watch Ultra 4 49mmKSh 118,000
Google Pixel Watch 5 45mmKSh 64,000
Amazfit T-Rex 3 ProKSh 55,000
Apple Watch UltraKSh 90,000
Apple Watch Ultra 2KSh 103,500
2 of 4 products

Our quick verdict

The Amazfit T-Rex Ultra 2 lasts longer between charges (30 days typical), gives daily recovery and BioCharge scores and is rated for free diving to 45 m, while the Amazfit Balance 3 is lighter to wear all day and syncs with apps such as Strava.

Display

Amazfit T-Rex Ultra 2
480 × 480 pixels, 322 ppi
Amazfit Balance 3
480 × 480 pixels; 323 ppi

Capacity

Amazfit T-Rex Ultra 2
870 mAh battery capacity
Amazfit Balance 3
658 mAh battery capacity

Portability

Amazfit T-Rex Ultra 2
89.2 g
Amazfit Balance 3
62 g

Storage

Amazfit T-Rex Ultra 2
Up to 64 GB storage
Amazfit Balance 3
64 GB storage

Connections

Amazfit T-Rex Ultra 2
Wi-Fi 4, Bluetooth 5.2
Amazfit Balance 3
Bluetooth 5.2

Key differences

The main differences to help you choose.

Amazfit T-Rex Ultra 2

  • Longer battery life: up to 30 days in typical use (vs 21).
  • Longer sport-mode battery: up to 50 hours in GPS: mode (vs 41 hours in GPS mode).
  • Bigger battery: 870 mAh (vs 658 mAh).
  • Daily recovery and BioCharge scores.
  • Rated for free diving to 45 m.

Amazfit Balance 3

  • Lighter: 62 g (vs 89.2 g).
  • Slimmer: 12.5 mm thick (vs 14.3 mm).
  • Syncs with third-party apps such as Strava and Apple Health.

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

6 priorities selected.
How each product answers the selected priorities
PriorityAmazfit T-Rex Ultra 2Amazfit Balance 3
Battery life870 mAh battery658 mAh battery
Portability89.2 g62 g
StorageUp to 64 GB storage64 GB storage
Display1.5-inch OLED display, 322 ppi1.5-inch OLED display, 323 ppi
ConnectionsWi-Fi 4, Bluetooth 5.2Bluetooth 5.2
SoftwareWorks with the Zepp appZepp OS 6

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Display1.5-inch AMOLED1.5-inch AMOLED
Screen resolution480 × 480 pixels, 322 ppi480 × 480 pixels; 323 ppi
Display protectionSapphire glassSapphire glass
Display featuresUp to 3,000 nits peak brightness; Always-On DisplayUp to 3,000 nits peak brightness; Always-On Display

Connectivity

Connectivity specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Wi-Fi2.4 GHz Wi-Fi (802.11 b/g/n)Wi-Fi 2.4 GHz
BluetoothBluetooth 5.2 and BLEBluetooth 5.2 BLE
Positioning / GNSSBuilt-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antennaDual-band GNSS; 6 satellite systems; circularly polarized antenna

Identity & design

Identity & design specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
BrandAmazfitAmazfit
ModelAmazfit T-Rex Ultra 2Amazfit Balance 3
Dimensions51 × 51 × 14.3 mm, excluding heart-rate sensor base51.4 × 51.4 × 12.5 mm; 14.6 mm including heart-rate sensor
Weight89.2 g with strapStainless steel: 62 g; titanium: 55 g, without strap
Build materialsFibre-reinforced polymer case; Grade 5 titanium bezel, buttons and back panelStainless-steel frame with fibre-reinforced polymer shell; titanium edition: Grade 5 titanium frame and case with stainless-steel buttons
Wrist size145–215 mm140–210 mm
Strap / band26 mm silicone strap with classic pin buckle22 mm quick-release silicone; pin buckle
Controls / buttonsFour physical buttons; sapphire-glass touchscreenFour physical buttons; touchscreen

Performance & software

Performance & software specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Storage64 GB total; 26.7 GB available64 GB
Operating system—Zepp OS 6

Audio & communication

Audio & communication specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
SpeakerSupportedSupported
MicrophoneSupportedSupported
CallingBluetooth calling and call/text notifications through a connected smartphoneBluetooth calling

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
SensorsBioTracker 6.0 PPG biometric sensor (5 photodiodes + 2 LEDs); accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor; temperature sensorBioTracker 6.0 PPG; 5 PD + 2 LED; accelerometer; gyroscope; ambient light; geomagnetic sensor; temperature; barometric altimeter
Health & wellness features24-hour heart-rate, blood-oxygen, stress and skin-temperature monitoring; one-tap measurement; HybridCharge, BioCharge and LifeLoad energy insights; VO₂ Max and health alerts24-hour heart rate, SpO₂ and stress; skin temperature; one-tap measurement; high and low heart-rate alerts; low SpO₂ alerts; breathing exercises; PAI; heart-rate recovery; menstrual-cycle tracking
Sleep trackingSleep HRV; sleep quality; stages including REM; daytime naps; sleep schedule; breathing quality; sleep score; RestoreIQ recovery insightsSleep HRV; sleep stages including REM; naps; sleep schedule; breathing quality; sleep score
Sports / workout modes187 sports modes; smart recognition of 25 strength-training movements and 8 sports movements; HYROX race and training modes180+ sports modes
Training & outdoor featuresZepp Coach; PeakBeats; lactate threshold, Training Stress Balance, Training Load and Training Effect; offline maps; on-watch route planning, automatic rerouting, POI search, turn-by-turn navigation; golf maps; external heart-rate, running-power and cycling sensorsZepp Coach; PeakBeats; training templates; interval training; track running; trajectory correction; virtual pacer; HYROX templates; lactate threshold; running power; ground-contact time; running gear management; HybridCharge; LifeLoad
Safety & emergency featuresTwo-colour flashlight with SOS/Boost modes; storm, high-altitude blood-oxygen and route-deviation alertsRed/white flashlight with SOS mode; abnormal high/low heart-rate, low-SpO2 and high-stress alerts; phone-call notifications
Diving / depth featuresFreediving and recreational scuba-diving support to 45 m; EN13319:2000, ISO 6425:2018 and GB/T 18828-2022 diving certifications; Bühlmann ZHL-16C decompression modelOutdoor and indoor freediving, recreational diving and spearfishing workout modes

Battery & durability

Battery & durability specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Battery capacity870 mAh rated658 mAh rated
Battery lifeTypical use: up to 30 days; heavy use: 15 days; AOD: 10 days; accurate GPS: 50 h; power-saving GPS: 90 h; maximum GPS: 177 h; low-temperature mode with GPS: 40 h21 days typical; 10 days heavy; 7 days AOD; 41 hours accurate GPS; 84 hours GPS power saver
ChargingMagnetic charging head; DC 5 V 1.5 A maximum inputMagnetic charging head
Water resistance10 ATM; tested to ISO 22810:201010 ATM
Durability / certificationsMIL-STD-810H-2019; low-temperature operation down to −30 °C; SGS water-resistance test; certified diving standardsLow pressure; high and low temperature; temperature shock; vibration; impact tests

Compatibility

Compatibility specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Phone compatibilityAndroid 7.0 or later; iOS 15.0 or laterAndroid 8 or later; iOS 17 or later
Companion appZepp AppZepp
ColorsBlack MagmaStainless Steel; Titanium Black

Additional specifications

Additional specifications specifications comparison
SpecificationAmazfit T-Rex Ultra 2Amazfit Balance 3
Case material—Stainless steel or Grade 5 titanium
Pixels per inch—323 ppi
Peak brightness—3,000 nits peak
Packing list—Watch with standard strap; magnetic charging head; instruction manual
Smart recognition—25 strength-training movements; 8 sports movements
Third-party fitness apps—Runna; Strava; TrainingPeaks; Apple Health; Google Fit; Intervals.icu

Similarities

  • Both use Bluetooth 5.2.
  • Both have a plastic case.
  • Both are water resistant to 100 m.
  • Both take calls over Bluetooth.
  • Both have OLED displays.
  • Both offer up to 64 GB of storage.

In summary

For most buyers the Amazfit T-Rex Ultra 2 is the better buy; the Amazfit Balance 3 makes sense if you want a lighter watch for all-day wear.

Back to compared products ↑

In-stock alternatives

Apple Watch UltraFor Amazfit T-Rex Ultra 2Apple Watch UltraView product ↗Apple Watch Ultra 3For Amazfit T-Rex Ultra 2Apple Watch Ultra 3View product ↗Amazfit T-Rex 3 ProFor Amazfit Balance 3Amazfit T-Rex 3 ProView product ↗

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