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Wearable comparison

Amazfit T-Rex 3 vs AmazFit Cheetah Round

Compare battery life, health tracking, display and fit.

Compared products
01Selected
Amazfit T-Rex 3

Amazfit T-Rex 3

  • Screen: 480 × 480 pixels; 322 ppi.
  • Runs Zepp OS 6.
  • 700 mAh battery capacity.
  • Bluetooth 5.2.
  • 10 ATM.
KSh 33,000In Stock
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02
AmazFit Cheetah Round

AmazFit Cheetah Round

  • Screen: 454 × 454 pixels; 326 ppi.
  • Runs Zepp OS 3.5.
  • Bluetooth 5.3 connection.
  • 440 mAh battery capacity.
  • 5 ATM.
KSh 28,000Out of Stock

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2 spaces available

Huawei Watch GT 7 41mmKSh 33,000
AmazFit CheetahKSh 28,000
Huawei Watch GT 5 ProKSh 34,000
Huawei Watch GT 6 ProKSh 33,500
OnePlus Watch 3KSh 33,000
Amazfit Balance 2KSh 39,000
Amazfit Cheetah 2 ProKSh 28,000
2 of 4 products

Our quick verdict

The Amazfit T-Rex 3 lasts longer between charges (27 days typical), has a brighter screen for outdoor use and is swimproof to 100 m, while the AmazFit Cheetah Round is lighter to wear all day and has faster recharging (2 hours).

Display

Amazfit T-Rex 3
480 × 480 pixels; 322 ppi
AmazFit Cheetah Round
454 × 454 pixels; 326 ppi

Software

Amazfit T-Rex 3
Runs Zepp OS 6
AmazFit Cheetah Round
Runs Zepp OS 3.5

Capacity

Amazfit T-Rex 3
700 mAh battery capacity
AmazFit Cheetah Round
440 mAh battery capacity

Portability

Amazfit T-Rex 3
68.3 g
AmazFit Cheetah Round
47 g

Connections

Amazfit T-Rex 3
Bluetooth 5.2
AmazFit Cheetah Round
Bluetooth 5.3

Key differences

The main differences to help you choose.

Amazfit T-Rex 3

  • Longer battery life: up to 27 days in typical use (vs 14).
  • Bigger battery: 700 mAh (vs 440 mAh).
  • Brighter display: up to 2,000 nits (vs 1,000).
  • Swimproof: water resistant to 100 m (vs 50 m).
  • Rated for free diving to 45 m.
  • Water resistant to 10 ATM (vs 5 ATM).

AmazFit Cheetah Round

  • Lighter: 47 g (vs 68.3 g).
  • Recharges faster: 2 hours (vs 3 hours).
  • Slimmer: 11.9 mm thick (vs 13.75 mm).

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 3AmazFit Cheetah Round
Battery life700 mAh battery440 mAh battery
Portability68.3 g47 g
Display1.5-inch OLED display, 322 ppi1.39-inch OLED display, 326 ppi
SoftwareZepp OS 6Zepp OS 3.5
ConnectionsBluetooth 5.2Bluetooth 5.3
Water resistance10 ATM5 ATM

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Display1.5-inch AMOLED1.39-inch AMOLED
Screen resolution480 × 480 pixels; 322 ppi454 × 454 pixels; 326 ppi
Display protectionCorning Gorilla GlassPanda tempered glass; anti-fingerprint coating

Connectivity

Connectivity specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Wi-FiWi-Fi 2.4 GHz—
BluetoothBluetooth 5.2 BLEBluetooth 5.3
Positioning / GNSSDual-band GNSS; 6 satellite positioning systemsDual-band GNSS; circularly polarized antenna; GPS; GLONASS; Galileo; BeiDou; QZSS; NavIC

Identity & design

Identity & design specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
BrandAmazfitAmazfit
ModelAmazfit T-Rex 3AmazFit Cheetah Round
Dimensions48.5 × 48.5 × 13.75 mm without heart-rate sensor base47 × 47 × 11.9 mm without heart-rate sensor base
Weight68.3 g without strap32 g without band; 47 g with band
Build materialsStainless-steel bezel; polymer middle frameFibre-reinforced polymer
Wrist size145–210 mm150–220 mm
Strap / band22 mm liquid silicone; pin buckle22 mm silicone; pin buckle
Controls / buttons4 physical buttons; touchscreen2 controls including crown; touchscreen

Performance & software

Performance & software specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Operating systemZepp OS 6Zepp OS 3.5

Audio & communication

Audio & communication specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
SpeakerUnsupported—
MicrophoneSupported—
CallingUnsupported—

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
SensorsBioTracker 6.0 PPG; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient light; temperatureBioTracker PPG; accelerometer; gyroscope; geomagnetic sensor; barometer; ambient light
Health & wellness features24-hour heart rate, SpO₂ and stress; one-tap measurement; PAI; breathing exercises; high and low heart-rate alerts; low SpO₂ alerts; high-altitude SpO₂ reminders24-hour heart rate, SpO₂ and stress; one-tap measurement; PAI; breathing exercises; high and low heart-rate alerts; low SpO₂ alerts; menstrual-cycle tracking
Sleep trackingSleep stages including REM; naps; sleep breathing quality; sleep scoreSleep stages including REM; naps; sleep schedule; sleep breathing quality; sleep score
Sports / workout modes177 sports modes150+ sports modes
Training & outdoor featuresZepp Coach; PeakBeats; training templates; interval training; track running; trajectory correction; virtual pacer; offline maps; turn-by-turn navigation; route import; return navigation; route-deviation alerts; altitude assistant; compass; sunrise and sunset; moon phase; tides; storm warningsZepp Coach; PeakBeats; track running; trajectory correction; virtual pacer; training templates; interval training
Diving / depth featuresFreediving to 45 m—

Battery & durability

Battery & durability specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Battery capacity700 mAh rated440 mAh
Battery life27 days typical; 13 days heavy; 40 days Battery Saver; 81 days clock; 42 hours accurate GPS; 72 hours GPS power saver; 180 hours maximum GPS14 days typical; 7 days heavy; 44 hours automatic GPS; 26 hours accurate GPS; 54 hours GPS power saver
ChargingMagnetic charging headMagnetic charging
Water resistance10 ATM5 ATM
Durability / certificationsEN 13319; ISO 6425; GB/T 18828 diving certifications—

Compatibility

Compatibility specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Phone compatibilityAndroid 7 or later; iOS 14 or laterAndroid 7 or later; iOS 12 or later
Companion appZeppZepp
ColorsOnyx; Lava; GraySpeedster Grey

Additional specifications

Additional specifications specifications comparison
SpecificationAmazfit T-Rex 3AmazFit Cheetah Round
Case materialStainless-steel bezel; polymer frameFibre-reinforced polymer
Pixels per inch322 ppi326 ppi
Peak brightness2,000 nits peak1,000 nits peak
Charging timeApproximately 3 hoursApproximately 2 hours
Packing listWatch with standard strap; magnetic charging head; instruction manualWatch with standard strap; magnetic charger; instruction manual
Smart recognition25 strength-training movements; 8 sports movements25 strength-training movements; 8 sports movements
Third-party fitness appsStrava; adidas Running; TrainingPeaks; komoot; Relive; Google Fit; Apple Healthadidas Running; Strava; komoot; Relive; Google Fit; Apple Health

Similarities

  • Both have a plastic case.
  • Both have OLED displays.
  • Both have similar screen sizes (1.5 and 1.39 inches).
  • Both connect over Bluetooth.
  • Both use 24-hour (health & wellness features).
  • Same companion app: Zepp.

In summary

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

Back to compared products ↑

In-stock alternatives

OnePlus Watch 3For Amazfit T-Rex 3OnePlus Watch 3View product ↗Huawei Watch GT 6 ProFor Amazfit T-Rex 3Huawei Watch GT 6 ProView product ↗Huawei Watch GT 6For AmazFit Cheetah RoundHuawei Watch GT 6View product ↗

Related comparisons

Amazfit T-Rex 3Huawei Watch GT 7 41mmAmazFit CheetahAmazfit T-Rex 3Amazfit T-Rex 3Huawei Watch GT 5 ProAmazfit T-Rex 3Huawei Watch GT 6 ProAmazfit T-Rex 3OnePlus Watch 3Amazfit T-Rex 3Amazfit Balance 2Amazfit T-Rex 3Amazfit Cheetah 2 ProAmazfit T-Rex 3Huawei Watch 6 42 mm
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