Amazfit T-Rex and Stratos 3 are two of the best smartwatches from Huami/Xiaomi, these two watches share quite a lot in common in terms of durable designs, being fitness-oriented, and long battery life, but there are still minute differences that separate one from the other. This comparison graph features Amazfit T-Rex vs Stratos 3, compare the differences based on design, fitness tracking features, media, battery life, price and otherwise to find out which is a better smartwatch for you.
Amazfit T-Rex vs Stratos 3 Features Compared
Page Contents
| Product Info |
 Amazfit T-Rex Specifications, Features and Price |
 Amazfit Stratos 3 Specifications, Features and Price |
|---|---|---|
| Price | $139.99 | $239.99 |
| 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 |
| Predecessor | — | Amazfit Stratos |
| Successor | — | — |
| Models | — | Amazfit Stratos 3 Elite Version |
| Date released | January, 2020 | September, 2019 |
| DISPLAY | DISPLAY | DISPLAY |
| Display size | 1.3 inches | 1.34 inch |
| Display type | AMOLED | LCD, Reflective |
| Resolution | 360 x 360 pixel | 320 x 320 px |
| Pixel density | — | — |
| Customizable watchface | Yes | Yes |
| Input type | 4 Physical buttons, Touchscreen | 4 Physical buttons, Touchscreen |
| Always-On | Yes | Yes |
| BODY | BODY | BODY |
| Shape | Circular, Curved | Circular |
| Case material | Fiber-reinforced polymer | Glass Fiber, Polycarbonate |
| Strap material | Silicone | Silicone |
| Bezel material | Polymer | Stainless steel |
| Strap size | 22 mm | 22 mm |
| Color | Black, Gray, Green, Khaki | Black |
| Screen protection | Corning Gorilla Glass 3 | Corning Gorilla Glass |
| Dimension | 47.7 X 47.7 X 13.5 mm | 45.72 x 45.72 x 12.7 mm |
| Weight | 58g | — |
| Waterproof rating | Yes, 5ATM | Yes, 5ATM |
| Swim-proof | Yes, recommended | Yes, recommended |
| Durability test | MIL-STD-810G | — |
| CONNECTIVITY | CONNECTIVITY | CONNECTIVITY |
| Bluetooth calling | No | No |
| Bluetooth | Bluetooth v5.0 | Bluetooth v5.0 |
| Wi-Fi | No | Yes, Wi-Fi 802.11 b/g/n |
| NFC | (China only), Yes | (China only), Yes |
| MEMORY | MEMORY | MEMORY |
| RAM | — | 512MB |
| ROM | — | 4GB |
| Memory card slot | No | No |
| CELLULAR | CELLULAR CONNECTIVITY | CELLULAR CONNECTIVITY |
| Network technology | None | None |
| SIM type | None | None |
| NOTIFICATIONS | NOTIFICATIONS | NOTIFICATIONS |
| SMS alert | Yes | Yes |
| Calls alert | Yes | Yes |
| Email alert | Yes | Yes |
| Event reminder | Yes | Yes |
| MEDIA | MEDIA | MEDIA |
| Audio | No | mp3/mp4 |
| Microphone | No | No |
| Loudspeaker | No | No |
| Bluetooth music | No | Yes |
| Camera | No | No |
| SENSORS | SENSORS | SENSORS |
| GPS | GLONASS, GPS | BEIDOU, Galileo, GLONASS, GPS |
| Accelerometer | Yes | Yes |
| HRM | Yes | Yes |
| Gyroscope | — | Yes |
| Pulse Ox. | — | — |
| Altimeter | No | No |
| Barometer | Yes | Yes |
| Compass | Yes | Yes |
| ECG | No | No |
| Thermometer | No | No |
| Ambient light | Yes | Yes |
| ACTIVITY TRACKING | ACTIVITY TRACKING | ACTIVITY TRACKING |
| Steps | Yes | Yes |
| Calories | Yes | Yes |
| Distance | Yes | Yes |
| Heart rate monitoring | Yes | Yes |
| Sleep tracking | Yes | Yes |
| Floors climbed | Yes | Yes |
| Blood oxygen | No | No |
| Blood Pressure | No | No |
| Stress | — | — |
| ECG tracking | No | No |
| Fall detection | No | No |
| Menstrual cycle | No | No |
| VO2 Max | — | Yes |
| Onscreen workout | No | No |
| Preloaded 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 duration | 1-2 hours | 1-2 hours |
| Solar power | No | No |
| PLATFORM | PLATFORM | PLATFORM |
| Operating system | Amazfit OS | Amazfit OS |
| Chipset | — | — |
| CPU | — | 1.2GHz dual-core |
| GPU | — | — |
| 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 |
| Customizable strap | 22 mm, Yes | 22 mm, Yes |
| Voice Assistant | No | No |
| Find my phone | Yes | Yes |
| Box content | Amazfit T-Rex, Charger, Manual, Straps | Amazfit Stratos 3, Charger, Manual, Straps |
| Price | $139.99 | $239.99 |
What’s the Difference?
Features | Amazfit T-Rex | Amazfit Stratos 3 |
Display | 1.3 inches AMOLED | 1.34 inches Transflective MIP LCD |
Materials | Polymer | Glass fiber reinforced polycarbonate and ceramic bezel |
Sport Modes | 14 | 80 |
FirstBeat | No | Yes; VO2 Max, recovery time, Training load, Training effect and 4 more |
Music Storage | No | Yes |
Battery Life | Smart mode: 20 days | Smart mode: 14 days |
From the tables, it’s clear that each of these two is a decent smartwatch with a durable design, lots of fitness tracking features, and long battery life. However, Stratos 3 is a premium and more equipped smartwatch than T-Rex. Stratos 3 weighs a little less than T-Rex, it also has a slightly wider display and has a more durable build.
Furthermore, Stratos 3 features more preset workout modes than T-Rex, it also features 8 FirstBeat algorithms that enable it to track professional fitness metrics such as VO2 Max., recovery time, training effect, training load, and more which T-Rex lacks. The Stratos 3 also comes with music storage which allows you to take your favorite tracks with you, unlike T-Rex that lacks music storage.
On the flip side, Amazfit T-Rex is a cheaper alternative with a more colorful AMOLED display and longer battery life, and it’s still a decent fitness tracker that can help you reach more fitness goals.
BOTTOM LINE: Amazfit Stratos 3 is a better smartwatch than T-Rex, it has a more durable build and has more fitness tracking features even though, T-Rex is still a decent choice and also far cheaper.
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