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Wearable comparison

Amazfit T-Rex 3 vs Xiaomi Watch 5

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 32,700In Stock
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02
Xiaomi Watch 5

Xiaomi Watch 5

  • Screen: 480 × 480 pixels, 312 ppi.
  • Dual-core Snapdragon CPU processor.
  • 2 GB RAM in this version.
  • 32 GB storage in this version.
  • Runs Xiaomi HyperOS 3.
KSh 30,000Out of Stock

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2 spaces available

Samsung Galaxy Watch 8 ClassicKSh 38,000
Huawei Watch GT Runner 2KSh 37,000
Google Pixel Watch 5 41mmKSh 42,000
Amazfit Balance 2KSh 40,900
AmazFit CheetahKSh 29,500
Huawei Watch GT 5 ProKSh 34,000
Huawei Watch GT 6 ProKSh 33,500
2 of 4 products

Our quick verdict

The Xiaomi Watch 5 has a bigger battery (930 mAh), is lighter to wear all day and has a premium stainless steel build with a sapphire back, while the Amazfit T-Rex 3 lasts longer between charges (up to 27 days), has a brighter screen for outdoor use and is swimproof to 100 m.

Display

Amazfit T-Rex 3
480 × 480 pixels; 322 ppi
Xiaomi Watch 5
480 × 480 pixels, 312 ppi

Software

Amazfit T-Rex 3
Runs Zepp OS 6
Xiaomi Watch 5
Runs Xiaomi HyperOS 3

Capacity

Amazfit T-Rex 3
700 mAh battery capacity
Xiaomi Watch 5
930 mAh battery capacity

Portability

Amazfit T-Rex 3
68.3 g
Xiaomi Watch 5
56 g

Connections

Amazfit T-Rex 3
Bluetooth 5.2
Xiaomi Watch 5
BT/BLE 5.4

Key differences

The main differences to help you choose.

Amazfit T-Rex 3

  • Longer rated battery life: up to 27 days (vs 6 days).
  • Brighter display: up to 2,000 nits (vs 1,500).
  • Swimproof: water resistant to 100 m (vs 50 m).
  • Rated for free diving to 45 m.
  • Syncs with third-party apps such as Strava and Apple Health.
  • Water resistant to 10 ATM (vs 5 ATM).

Xiaomi Watch 5

  • Bigger battery: 930 mAh (vs 700 mAh).
  • Lighter: 56 g (vs 68.3 g).
  • Stainless steel case and sapphire back (vs plastic case).
  • Speaker.
  • Bluetooth calling through a connected smartphone.
  • Slimmer: 12.3 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 3Xiaomi Watch 5
Battery life700 mAh battery930 mAh battery
Portability68.3 g56 g
Display1.5-inch OLED display, 322 ppi1.54-inch OLED display, 60 Hz, 312 ppi
SoftwareZepp OS 6Xiaomi HyperOS 3
ConnectionsBluetooth 5.2BT/BLE 5.4
Water resistance10 ATM5 ATM

Detailed comparison

Explore the full specifications, section by section.

Display

Display specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Display1.5-inch AMOLED1.54-inch AMOLED
Screen resolution480 × 480 pixels; 322 ppi480 × 480 pixels, 312 ppi
Display protectionCorning Gorilla GlassSapphire crystal
Display features—Up to 1,500 nits HBM brightness; 60 Hz refresh rate; 2.6 mm bezel; Always-On Display

Connectivity

Connectivity specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Wi-FiWi-Fi 2.4 GHz2.4 GHz Wi-Fi
BluetoothBluetooth 5.2 BLEBT/BLE 5.4
Positioning / GNSSDual-band GNSS; 6 satellite positioning systemsBuilt-in dual-band GNSS: GPS L1+L5, Galileo, GLONASS, BeiDou and QZSS
Network / cellular—GSM, HSPA and LTE on cellular model
SIM / eSIM—eSIM on cellular model; market and region dependent
NFC—Supported; availability varies by region

Identity & design

Identity & design specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
BrandAmazfitXiaomi
ModelAmazfit T-Rex 3Xiaomi Watch 5
Dimensions48.5 × 48.5 × 13.75 mm without heart-rate sensor base47 × 47 × 12.3 mm
Weight68.3 g without strap56 g without strap
Build materialsStainless-steel bezel; polymer middle frameSapphire-crystal front and rear sensor cover; 316L stainless-steel case
Wrist size145–210 mm135–205 mm
Strap / band22 mm liquid silicone; pin buckleFluororubber strap
Controls / buttons4 physical buttons; touchscreenRotating crown; side button; touchscreen; gesture controls
Announced—26 December 2025

Performance & software

Performance & software specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Operating systemZepp OS 6Xiaomi HyperOS 3
Processor—Qualcomm Snapdragon W5 Gen 1 (4 nm) plus BES2800 low-power processor (6 nm)
CPU—Dual-core Snapdragon CPU
RAM—2 GB
Storage—32 GB

Audio & communication

Audio & communication specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
SpeakerUnsupportedSupported
MicrophoneSupportedSupported
CallingUnsupportedBluetooth calling through a connected smartphone; third-party app voice calls not supported

Sensors, health & fitness

Sensors, health & fitness specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
SensorsBioTracker 6.0 PPG; accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient light; temperaturePPG; accelerometer; gyroscope; ambient-light; electronic compass; barometer; EMG
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 remindersOne-tap health assessment; all-day heart-rate, blood-oxygen and stress monitoring
Sleep trackingSleep stages including REM; naps; sleep breathing quality; sleep scoreHigh-precision sleep monitoring
Sports / workout modes177 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 warnings—
Diving / depth featuresFreediving to 45 m—

Battery & durability

Battery & durability specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Battery capacity700 mAh rated930 mAh lithium-ion polymer battery
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 GPSSmart mode: up to 6 days; Smart AOD: 4 days; power saver: up to 18 days, 12 days normal detection, 7 days with AOD
ChargingMagnetic charging headMagnetic pogo-pin charging dock; approximately 90 minutes to full charge
Water resistance10 ATM5 ATM
Durability / certificationsEN 13319; ISO 6425; GB/T 18828 diving certifications—

Compatibility

Compatibility specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Phone compatibilityAndroid 7 or later; iOS 14 or later—
Companion appZeppMi Fitness
ColorsOnyx; Lava; GrayBlack; Juniper Green

Additional specifications

Additional specifications specifications comparison
SpecificationAmazfit T-Rex 3Xiaomi Watch 5
Case materialStainless-steel bezel; polymer frame—
Pixels per inch322 ppi—
Peak brightness2,000 nits peak—
Charging timeApproximately 3 hours—
Packing listWatch with standard strap; magnetic charging head; instruction manual—
Smart recognition25 strength-training movements; 8 sports movements—
Third-party fitness appsStrava; adidas Running; TrainingPeaks; komoot; Relive; Google Fit; Apple Health—

Similarities

  • Both have OLED displays.
  • Both have similar screen sizes (1.5 and 1.54 inches).
  • Both use 2.4 GHz Wi-Fi only.
  • Both have a microphone.

In summary

Get the Xiaomi Watch 5 if you want a bigger battery and a lighter watch for all-day wear, or the Amazfit T-Rex 3 if you would rather have longer battery life and a brighter screen for outdoor use.

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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 7 46mmFor Xiaomi Watch 5Huawei Watch GT 7 46mmView product ↗

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