Wearables have been smart devices we have been testing at GearBrain for the past nine years. We have seen these smart devices morph into different types of wearables. Some smartwatches can be used for working out but can transform into stylish watches for dinner parties by changing the band. Some fitness trackers can track your workouts and provide valuable health information like your blood pressure, how well you sleep, heart health (ECG), and stress levels. Recently, I got to test a new smartwatch that combines a smartwatch and fitness tracker with robust health tracking. It's by Amazfit T-Rex 3 Smartwatch, their third generation of the T-Rex line. This watch is designed for those who work out and want to keep an eye on everything they do and their health, no matter where they work out. Check out what I learned from wearing this smartwatch for the past few months.
Amazfit T-Rex 3 Smartwatch unboxed
GearBrain
The Amazfit T-Rex 3 Smartwatch is a rugged, premium outdoor smartwatch designed for those who live by the "Brave Your Adventure" philosophy, offering professional-grade durability and an extensive suite of features to support your explorations. Crafted with a tough 316L stainless steel bezel and a liquid silicone strap, this robust 48mm watch is made for the most challenging environments. Its mud-resistant design and water resistance of up to 100 meters (10 ATM) make it ideal for all-terrain use, including freediving up to 45 meters, certified by EN13319, ISO 6425, and GB/T 18828 standards.
Amazfit T-Rex 3 SmartwatchGearBrain
The T-Rex 3 has a large, vibrant 1.5" AMOLED display, boasting 2,000 nits of brightness for optimal visibility in any lighting condition. With a 480x480 and 322 PPI resolution, you can easily see every detail on the high-contrast screen. Protected by Gorilla Glass, this responsive touchscreen is even functional with gloves up to 2mm thick, allowing you to operate smoothly whether hiking in freezing temperatures or scaling rugged terrain.
Battery life is a standout feature of the T-Rex 3, offering various modes to suit different needs and environments. Its standard battery lasts up to 27 days, and in Battery Saver Mode, you can expect up to 40 days, while Clock Mode delivers an impressive 81 days. The T-Rex 3's GPS Ultra Long Battery Life mode provides up to 180 hours, while GPS Long Battery Life mode lasts up to 114 hours. The battery lasts around 13 days for heavy users, making it a dependable companion even during lengthy, intense adventures.
Control your Amazfit T-Rex 3 Smartwatch with Zepp appGearBrain
The T-Rex 3 supports over 170 sports modes, from walking, running, and cycling to more intense outdoor activities like climbing, skateboarding, off-road motorcycling, and even open-water swimming. The sports tracker provides real-time feedback, turn directions, and live workout data broadcast while supporting third-party app sync with Strava, Google Fit, Apple Health, and adidas Running. Health monitoring includes 24-hour heart rate monitoring, blood oxygen saturation, stress levels, and sleep tracking with REM stages. With the integrated health assessment system (PAI), users receive personalized feedback, low blood oxygen alerts, and reminders to perform stress-relieving breathing exercises.
The Amazfit T-Rex 3 goes beyond basic fitness tracking, featuring Zepp Flow AI coaching for personalized training routines and fitness plans. It provides a hands-free workout experience with voice control and speech-to-text replies, offering seamless, on-the-go management for workouts and daily tasks. Paired with the Zepp app (compatible with Android 7.0+ and iOS 14.0+), the T-Rex 3 lets you monitor all your fitness stats, download apps, and customize training directly from your smartphone.
Create customized workouts in Zepp appGearBrain
The T-Rex 3 is engineered with outdoor adventurers in mind. It offers high-precision positioning, dual-band satellite support, and optimized route navigation with offline contour maps and turn-by-turn directions. Additional environmental tools include an altitude assistant, compass, and alerts for sunrise, sunset, moon phases, tides, and storm warnings. Whether in a remote wilderness or an urban environment, this watch keeps you oriented and informed.
In addition to sports and health tracking, the T-Rex 3 offers lifestyle features like Bluetooth camera control (iOS only), music control, and Find My Phone functionality. It supports call and message notifications, with Call Quick Reply available for Android users, making it easier to stay connected while moving. Furthermore, it offers a growing library of downloadable mini-apps, including a pill reminder, Sonos control, climbing difficulty calculator, and GNSS satellite info for enhanced functionality.
For a more customized experience, the T-Rex 3 pairs with Bluetooth peripherals like action cameras, heart rate belts, cadence meters, and air quality monitors to help you maximize the value of your outdoor adventures. Here are the various Bluetooth Low Energy (BLE) protocol devices the T-Rex 3 supports, ensuring seamless integration.
The T-Rex 3 operates in a wide temperature range, from -22°F (-30°C) to 158°F (70°C), making it resilient against extreme weather conditions. Weighing just 68.3g, it's lightweight enough for everyday wear yet durable enough for the harshest environments.
The Amazfit T-Rex 3 is a high-performance GPS smartwatch crafted for the ultimate explorer. Its advanced GPS, long battery life, rugged design, and extensive fitness and health features provide versatility and durability for any adventure, whether navigating the wild or staying active in everyday life.
Pair your Amazfit T-Rex 3 Smartwatch with a compatible smartphone using Zepp AppGearBrain
The setup for the T-Rex 3 smartwatch is straightforward. First, take it out of the box and charge it. While charging, download the Zepp app from the App Store (iOS) or Google Play (Android). Create an account, then pair the watch with the Zepp app on your smartphone as the watch is charging. When pairing, the screen on the watch will show the downloading process, and you will need to interact with the watch to complete the pairing process. Once completed and the watch is charged, you can start setting up alerts and features you wish to use. The setup process takes a few minutes.
The Amazafit T-Rex 3 Smartwatch has an MSRP of $279.99 and is available on the company sites of Amazon, Best Buy, Walmart, and other online electronic retailers. Is this a reasonable price? If you compare the Amazfit T-Rex 3 to other smartwatches designed for outdoor workout enthusiasts with similar features, the AmazFit T-Rex 3 is an excellent price. Take, for instance, Apple Watch Ultra 2. This is the one smartwatch with a robust offering in terms of sports modes and fitness/health tracking capabilities, and it is double the cost of the Amazfit T-Rex 3.
Depending on the display's screen setting, you could get glare when outside which makes it hard for you to see the display on the Amazfit T-Rex 3 Smartwatchwww.gearbrain.com
After testing the Amazfit T-Rex 3 Smartwatch for several months, I found it to be a solid, rugged option with much to offer, particularly for outdoor fitness enthusiasts. The large face and multiple button options simplify navigating the watch, though the size may not be for everyone. The selection of watch displays and data tracked through the Zepp app is extensive—ideal for data lovers but potentially overwhelming for some. The watch's lack of integration with voice assistants like Siri and Google Assistant was a drawback, as was the need to upload music to the Zepp app instead of streaming directly. However, the Zepp Flow feature, powered by OpenAI's GPT-4o, is innovative, providing unique AI coaching and sleep assessment features for a subscription fee. Battery life is one of the T-Rex 3's biggest strengths, lasting over 80 days in clock mode, 32 days with GPS off, and up to 27 days in typical use, which is excellent for a feature-rich smartwatch.
Outdoor features, including mapping, navigation, and high-precision tracking, were beneficial for hiking and trail running, though the watch screen can be hard to read in bright sunlight. The strap felt flimsy for intense workouts so that a replacement might be necessary for heavy users. The T-Rex 3 is compatible with many third-party fitness apps and has basic Bluetooth connectivity for heart rate and power meters, but some features, like Sonos control, were hard to locate. At $279.99, the T-Rex 3 provides nearly the same functionality as the much pricier Apple Watch Ultra 2 without features like texting or full music streaming.
Amazfit T-Rex 3 Smartwatch's AI working to show results of heart rate after walking.
GearBrain
Overall, the Amazfit T-Rex 3 is an excellent choice for fitness enthusiasts, extreme sports participants, and users seeking a durable, feature-rich smartwatch that tracks comprehensive health metrics and offers extensive battery life at a reasonable price. It's an excellent alternative for those who want the capabilities of an Apple Watch Ultra 2 without the high cost or for those seeking an AI-powered fitness companion through Zepp Flow's coaching and health insights.
After testing this smartwatch for several weeks, I can say the Amazfit T-Rex 3 Smartwatch is an impressive blend of durability, advanced fitness features, and affordability, making it an excellent option for adventure seekers and enthusiasts. Its extensive battery life, rugged design, and compatibility with popular health and fitness apps position it as a strong competitor among outdoor smartwatches, particularly for those prioritizing performance over extras like streaming and voice assistants. While the lack of certain integrations may be a drawback for some, its reliable fitness tracking, navigational tools, and Zepp Flow's AI coaching make it an outstanding choice at $279.99—offering excellent value compared to higher-end options like the Apple Watch Ultra 2. For anyone looking for a smartwatch that can keep up with rigorous outdoor activity while delivering practical insights and essential tracking, the Amazfit T-Rex 3 delivers on all fronts.
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