Amazfit T-Rex vs. Garmin VivoActive 4

VivoActive 4
 AmazfitT-RexBuy NowGarminVivoActive 4Buy Now

Basic Info

Suggested Price$140$349

Activity & Fitness

Cycling (Bicycling)


Duration20 days8 days


Windows Phone




Resolution360 x 360260 x 260
Size1.3 inches1.3ionches


Audio Speaker


Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM




Operating SystemBuild-inWear OS

Comparing VivoActive 4 and T-Rex

When it comes to smartwatches, Amazfit T-Rex and Garmin VivoActive 4 are among the top choices. Both devices cater to fitness and activity tracking enthusiasts, offering a range of features that appeal to users. Understanding the importance of selecting the right watch is crucial, as it can make all the difference in achieving personal fitness goals and maintaining an active lifestyle.

Amazfit and Garmin are known for creating reliable and feature-packed wearables. Amazfit, powered by Huami, delivers advanced smartwatches at an affordable price, while Garmin has a longstanding reputation for quality GPS devices and advanced fitness trackers. By comparing these two smartwatches, you can determine which one aligns with your needs and preferences.

In this article, you can expect a thorough comparison between the Amazfit T-Rex and Garmin VivoActive 4, including their design and build, features, functionality, user interface and experience, price and value, and more.

Design and Build

Amazfit T-Rex

The Amazfit T-Rex boasts a rugged design, perfect for outdoor enthusiasts. Its durable build features high-strength, impact-resistant materials, with the watch weighing 56.7g. The 1.3-inch AMOLED display has a resolution of 360 x 360 pixels, ensuring crisp visuals even in bright conditions.

Garmin VivoActive 4

The Garmin VivoActive 4 dons a sleek, sporty look with a high-quality build. This smartwatch is lightweight at 50.5g and has a 1.3-inch MIP display, with a resolution of 260 x 260 pixels. The lower resolution compared to the T-Rex doesn’t affect its clarity, and it remains easily readable in various lighting conditions.

Comparison of design and build quality

Comparing the design and build quality of the Amazfit T-Rex and Garmin VivoActive 4 reveals several similarities and differences. Both smartwatches feature 1.3-inch displays and 5 ATM water resistance, but the T-Rex has a rugged exterior and higher-resolution screen, whereas the VivoActive 4 offers a sleeker design and slightly lower-resolution display. Choosing between the two ultimately depends on personal preferences and intended use.

Features and Functionality

Amazfit T-Rex

The Amazfit T-Rex comes with its built-in operating system, various sensors for fitness tracking, a 20-day battery life, and essential smartwatch features such as mobile notifications and music controls. However, it lacks certain advanced features found in the Garmin VivoActive 4, like oxygen tracking and Wi-Fi connectivity.

Garmin VivoActive 4

The VivoActive 4 runs on Wear OS and offers several sensors for comprehensive fitness tracking, including oxygen tracking. It also has an 8-day battery life, Wi-Fi connectivity, and standard smartwatch features like mobile notifications and music controls. Note that the device has a shorter battery life compared to the Amazfit T-Rex.

Comparison of features and performance

Both the Amazfit T-Rex and Garmin VivoActive 4 share many common features, such as multiple tracking functionalities, connection to smartphone apps, and mobile notifications. They differ in the operating system, battery life, and oxygen tracking availability. The T-Rex has a more extended battery life, while the VivoActive 4 supports oxygen tracking and Wi-Fi capabilities.

User Interface and User Experience

Amazfit T-Rex

The Amazfit T-Rex provides an intuitive user interface, with smooth navigation, access to apps, and a high level of customization for watch faces. It is compatible with Android and iOS smartphones, allowing seamless connectivity and synchronization.

Garmin VivoActive 4

On the VivoActive 4, users can expect an easy-to-use interface, equipped with convenient navigation, apps, and customization options for watch faces. Compatibility with Android and iOS smartphones ensures smooth interaction and synchronization between devices.

Comparison of user interface and user experience

Both the Amazfit T-Rex and Garmin VivoActive 4 provide similar user experiences, with intuitive interfaces, app accessibility, and seamless smartphone compatibility. Users can expect a pleasant experience regardless of the chosen device.

Price and Value

Amazfit T-Rex

Priced at $140, the Amazfit T-Rex offers excellent value for money. Its affordability, combined with a comprehensive range of features and a robust build, make it an attractive option for smartwatch enthusiasts.

Garmin VivoActive 4

The Garmin VivoActive 4, priced at $349, is a more expensive option. However, its advanced features, reliable fitness tracking, and sleek design justify its price tag, appealing to users seeking a premium fitness wearable.

Comparison of price and value

While the Amazfit T-Rex presents a budget-friendly choice with robust features, the Garmin VivoActive 4 offers a premium product with advanced capabilities. The decision comes down to preferred features and budget, as both smartwatches provide value in their respective segments.


Both the Amazfit T-Rex and Garmin VivoActive 4 smartwatches are excellent products with varied strengths. If you prefer a rugged, budget-friendly smartwatch, the T-Rex is an ideal choice. On the other hand, if you’re willing to invest in a more advanced device with additional features like oxygen tracking, the VivoActive 4 is worth considering.

Frequently Asked Questions

What is the main difference in features between Amazfit T-Rex and Garmin VivoActive 4?

The primary difference in functionality is that the Garmin VivoActive 4 includes oxygen tracking, while the Amazfit T-Rex does not.

Which smartwatch offers a longer battery life, T-Rex or VivoActive 4?

The Amazfit T-Rex offers a longer battery life, lasting up to 20 days, while the Garmin VivoActive 4 lasts up to 8 days on a single charge.

Is the Amazfit T-Rex or Garmin VivoActive 4 more suitable for outdoor activities?

The Amazfit T-Rex, with its rugged design and durable build, is more suitable for outdoor activities than the VivoActive 4. However, both watches provide excellent fitness tracking and water resistance, making them compatible with various physical activities.

Are both smartwatches compatible with Android and iOS smartphones?

Yes, both the Amazfit T-Rex and Garmin VivoActive 4 are compatible with Android and iOS smartphones, allowing effortless interaction and synchronization between the devices.

Which smartwatch offers a higher screen resolution, Amazfit T-Rex or Garmin VivoActive 4?

The Amazfit T-Rex has a higher screen resolution (360 x 360 pixels) compared to the Garmin VivoActive 4 (260 x 260 pixels), providing sharper visuals and more vibrant colors on its display.

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