Amazfit T-Rex vs Amazfit Stratos 3 – Which is Better?

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Featured in this comparison chart are two rugged sports smartwatches from Huami/Xiaomi; the Amazfit T-Rex vs Stratos 3 – Which is a better smartwatch. The T-Rex is a relatively newer rugged-looking smartwatch certified with MIL-STD-810 – US military-grade rating, while the Stratos 3 is a more equipped and sophisticated smartwatch with more fitness tracking features, durable build, and onboard music storage. We compare these two fine smartwatches head-to-head to help you decide which is a better smartwatch.

The Stratos 3 is a more comprehensive fitness smartwatch than Amazfit T-Rex (Source: Amazfit)

Amazfit T-Rex vs Amazfit Stratos 3: Specifications Compared

 
 
Product Info
Amazfit T-Rex Specs and features

Amazfit T-Rex Specifications, Features and Price

Amazfit smartwatches

Amazfit Stratos 3 Specifications, Features and Price

Price $250.56 $169.99
ABOUT DEVICE ABOUT DEVICE ABOUT DEVICE
Device name Amazfit T-Rex Amazfit Stratos 3
Device type Fitness/Sport smartwatch Fitness/Classic smartwatch
Gender Men Men
Release date January, 2020 September, 2019
Predecessor Amazfit Stratos 2
Successor
Versions Amazfit Stratos 3 Elite Version
BODY BODY BODY
Dimension 47.7 X 47.7 X 13.5 mm 45.72 x 45.72 x 12.7 mm
Weight 58g 60 grams
Shape Circular, Curved Circular
Case material Fiber-reinforced polymer Stainless steel 316L
Strap material Silicone Silicone
Bezel material Polymer Ceramics
Strap size 22 mm 22 mm
Screen protection Corning Gorilla Glass 3 Corning Gorilla Glass
Water resistance Yes, 5ATM Yes, 5ATM
Durability test MIL-STD-810G
Swim-proof Yes, recommended Yes, recommended
Color Black, Gray, Green, Khaki Black
DISPLAY DISPLAY DISPLAY
Display size 1.3 inches 1.34 inch
Display type AMOLED Memory-in-pixel (MIP), transflective
Display resolution 360 x 360 pixel 320 x 320 px
Pixel density
Always on Yes Yes
Custom watch face Yes Yes
Input type 4 Physical buttons, Touchscreen 4 Physical buttons, Touchscreen
CONNECTIVITY CONNECTIVITY CONNECTIVITY
Bluetooth Bluetooth v5.0 Bluetooth v5.0
Bluetooth calling No No
GPS GLONASS, GPS BEIDOU, Galileo, GLONASS, GPS
NFC (China only), Yes (China only), Yes
Wi-Fi No Yes, Wi-Fi 802.11 b/g/n
MEMORY MEMORY MEMORY
RAM 512MB
ROM 4GB
Memory card slot No No
CELLULAR CONNECTIVITY CELLULAR CONNECTIVITY CELLULAR CONNECTIVITY
Technology None None
SIM type None None
Band
NOTIFICATIONS NOTIFICATIONS NOTIFICATIONS
SMS alert Yes Yes
Calls alert Yes Yes
Email alert Yes Yes
Event reminder Yes Yes
Third-party apps alert Yes Yes
MEDIA MEDIA MEDIA
Audio No mp3/mp4
Bluetooth music No Yes
Loudspeaker No No
Microphone No No
Camera No No
Radio No No
SENSORS SENSORS SENSORS
Accelerometer Yes Yes
Altimeter No
Ambient light Yes Yes
Barometer Yes Yes
Compass Yes Yes
ECG No No
Gyroscope Yes
HRM Yes Yes
Pulse oximeter (SpO2)
Thermometer No No
Other sensors
ACTIVITY TRACKING ACTIVITY TRACKING ACTIVITY TRACKING
Blood oxygen No No
Blood Pressure No No
Calories Yes Yes
Distance Yes Yes
ECG tracking No No
Heart rate monitoring Yes Yes
Sleep tracking Yes Yes
Steps Yes Yes
Floors climbed - Yes
Stress
Incidental fall detection No No
Menstrual cycle No No
VO2 Max Yes
Swim-tracking No Yes
Underwater heart rate tracking No No
On-screen workout No No
Sport modes 14, Yes 80, Yes
BATTERY BATTERY BATTERY
Battery type non-removable Lithium-polymer non-removable Lithium-polymer
Battery capacity 390mAh 300mAh
Battery life GPS: 20hrs, Regular: 20 days Regular: 7 days+, Ultramode: 14 days
Charging type 2-Pin charging Charging dock
Charging time 1-2 hours 1-2 hours
Solar charging No No
PLATFORM PLATFORM PLATFORM
Chipset
CPU 1.2GHz dual-core
GPU
Operating system Amazfit OS Amazfit OS
MISC MISC MISC
Companion app Amazfit Watch App Amazfit Watch App
Compatibility Android 5.0+, iOS 10.0+ Android 5.0+, iOS 10.0+
Payment system Yes Alipay
Interchangeable strap 22 mm, Yes 22 mm, Yes
Voice command No No
Find my phone Yes Yes
Box content Amazfit T-Rex, Charger, Manual, Straps Amazfit Stratos 3, Charger, Manual, Straps
Price$250.56$169.99

Amazfit T-Rex vs Amazfit Stratos 3 Differences Compared

In terms of design, the Stratos 3 is a more durable and sophisticated smartwatch than the T-Rex. The Stratos 3 has a finely polished body made of glass fiber and polycarbonate while the T-Rex has a fiber-reinforced polymer case. Furthermore, the T-Rex has a bezel made of polymer while the Stratos has a stainless steel bezel. Meanwhile, both watches come with silicone straps and are rated 5ATM.

The Display also differs. The Amazfit T-Rex has an AMOLED display which is more colorful than the LCD display of Stratos 3.

The Stratos 3 comes with a 4GB storage capacity that allows you to add your personal music to the watch so that you can listen to music without carrying your phone along. The T-Rex doesn’t allow you to add music. In other words, with Stratos 3 you can store music onboard the watch, but not with the T-Rex.

Both the Ammazfit T-Rex and Stratos 3 come with a heart rate sensor, inbuilt GPS, accelerometer, and gyroscope that enables this to track your steps, calories, sleep, and heart rate as well as routes and locations when you go for outdoor activities. However, the Stratos 3 is equipped with 8 Firstbeat algorithms that enable it to track your Vo2 Max., recovery time, and training load. This makes the Stratos 3 a more comprehensive fitness smartwatch than the T-Rex.

Meanwhile, the T-Rex with a battery life of up to 20 days allows you to go long from a single charge compared to about 7 days battery life with the Stratos 3. Nonetheless, each of these two has long battery life.

Which is Better?

Both the T-Rex and Stratos 3 are sturdily built and fitness-focused devices with a long battery life that lets you go longer. However, Stratos 3 is a more sophisticated smartwatch. It features 8 Firstbeat algorithms that monitor your blood oxygen to ascertain your fitness level, recovery time that helps you plan better, and training load that shows the physiological impact of your training over time.

Moreover, the Stratos 3 with a 4GB storage capacity will allow you to store your favorite tracks onboard the watch so that you can listen to music without carrying your phone along.

Amazfit T-Rex vs Stratos 3
The T-Rex is cheaper, has a more colorful display and longer battery life (Source: Amazfit)

On the other hand, the Amazfit T-Rex is a decent alternative. It’s cheaper, yet a comprehensive fitness tracker. It’s very rugged, has a more colorful display, and has a longer battery life that lets you go longer.

Amazfit T-Rex and Stratos 3 Prices