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Amazfit

Amazfit T-Rex Ultra Tactical Smart Watch for Men 47mm, Military-Grade Sports Watch, Dual-Band GPS, 20-Day Battery, Android & iPhone, Black

  • Based on 343 reviews
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Style: Smart Watch Only


Color: Abyss Black


Features

  • RUGGED DURABILITY: Designed as a military smart watch for men and women, the Amazfit T-Rex Ultra, constructed with 316L stainless steel and mud-resistant technology, provides resilience in the toughest environments
  • ULTRA-CLEAR DISPLAY: Built for visibility, this iPhone and Android smart watch features an HD AMOLED screen with up to 1,000 nits brightness, offering clarity in all lighting, ideal for outdoor activities
  • FREEDIVING READY: Perfect for those seeking adventure, this rugged smart watch supports water resistance up to 30 meters, accommodating a variety of water sports, such as swimming and kitesurfing
  • PRECISE NAVIGATION: This wrist watch with dual-band GPS and six satellite systems offers precise accuracy and coverage, making it a preferred choice as a smartwatch for embarking on global adventures
  • UNMATCHED BATTERY LIFE: With a 20-day battery life, this smartwatch integrates innovative modes like Endurance GPS, designed for efficient power usage during long outdoor escapades

Operating System: Zepp OS


Memory Storage Capacity: 2.3 GB


Special Feature: 30m Freediving Support, Altitude Assistant, Compass, Mud-resistant, Ultra-low Temperature Operation


Battery Capacity: 700 Milliamp Hours


Connectivity Technology: GPS


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Polymer


GPS: GPS Enabled


Shape: Round


Screen Size: 1.39 Inches


Operating System: Zepp OS


Additional Features: 30m Freediving Support, Altitude Assistant, Compass, Mud-resistant, Ultra-low Temperature Operation


GPS Geotagging Functionality: GPS Enabled


Band Material Type: Stainless Steel


Case Material Type: Stainless Steel


Water Resistance Level: Water Resistant


Sport Type: Fitness


Closure Type: Buckle


Human Interface Input: Buttons, Touchscreen


Clasp Type: Tang Buckle


Supported Application: GPS


Water Resistance Depth: 100 Meters


Supported Satellite Navigation System: GPS


Controller Type: Android, iOS


Metrics Measured: battery


Shape: Round


Style Name: Smart Watch Only


Color: Abyss Black


Band Color: black


Screen Size: 1.39 Inches


Display Type: AMOLED


Resolution: 466 x 466


Maximum Display Brightness: 1000 Nit


Item Dimensions: 1.86 x 1.86 x 0.53 inches


Memory Storage Capacity: 2.3 GB


Brand: Amazfit


Model Name: t-rex ultra,ultra


Target Audience: Men


Age Range Description: Adult


Model Number: A2142-Black


Built-In Media: Charging Cable, Smart Watch, User Manual


Wearable Computer Type: Smart Watch


UPC: 850030107817


Manufacturer: Amazfit


Item Type Name: Smartwatches


Warranty Description: 1 year manufacturer


Battery Capacity: 700 Milliamp Hours


Battery Cell Type: Lithium Polymer


Battery Average Life: 480 Hours


Connectivity Technology: GPS


Wireless Compability: Bluetooth


Wireless Provider: BASE


Communication Feature: Voice Call,Notification,Text Message


Compatible Devices: Android 7.0 and above, iOS 14.0 and above


Compatible Phone Models: Android 7.0 and above, iOS 12.0 and above


Warranty Type: Limited


Waterproof Rating: IP68


Frequently asked questions

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Top Amazon Reviews

    • Great watch! Terrible band!
Style: Smart Watch Only Color: Abyss Black
Review Image by eire1274
Review Image by eire1274
Ok, everybody has terrible bands these days, so I am deducting no points. The band in the picture is the Hēmsut leather band you can get separately. I am converting from a Fitbit Versa 4 that has served me well, but I did it a battery injury while in a hospital bed FOR 2 MONTHS and it now needs to be charged daily to log my heart rhythm and SpO2 levels, which is too easy to forget. I need the hourly logs to have with me for cardiologist visits as we monitor my artificial heart valve, 20 years old and still running! The T-Rex Ultra is OVERKILL for what I want, but I was after the battery life and water resistance (I’ve murdered a couple watches in a swimming pool, finding that “10m water resistance” doesn’t compete with dive ratings) which it covers across the board. I charged it when it arrived, then had to run through 3 firmware upgrades to get to the current OS, Zepp OS 4. That was 3 days ago. The watch, despite having hourly testing on, WiFi active, and live Accuweather running, still has 76% left on the battery. That’s awesome! A lot of the workout tools I have only poked at, not put to use fully, but I am recovering from muscle atrophy following my hospitalization. When the weather warms up, the pup and I will be putting it to use and if there are issues, I’ll come back and add it. Overall, considering I was looking at a Garmin watch for 3 times the cost, I’ve compared capabilities between it (my close friend owns it) and the Amazfit holds a dead even rating. That says a lot! Thus far, I’ve banged the glass into my guitar and the inside of my server with absolutely no scratching. The steel frame helps. Overall, for health needs, I can log everything in Apple Health on my iPhone, export to a spreadsheet in Google Docs, and have detailed info for my docs when I have appointments. I couldn’t ask for better usability. 100% cat compatible! ... show more
Reviewed in the United States on February 13, 2025 by eire1274
    • Excellent smart watch
Style: Smart Watch Only Color: Abyss Black
First of all, I am a previous iWatch person. I have had three, my last being the iWatch ultra. I purchased iWatches for the features, heart rate, exercise, etc. I was never happy with the square shape, but I used it to monitor my activities, sleep, heart, oxygen. I was never happy with the battery life, I was having to charge every day. Then I purchased this watch after doing some research. It does everything the iWatch does, but in my opinion better. It looks great and it is very dependable and rugged. The battery life is great. For example, I charged my watch four days ago and I am at 75% now. I would highly recommend this watch. ... show more
Reviewed in the United States on May 2, 2024 by Larry Myers
    • It functions well
Style: Smart Watch Only Color: Abyss Black
Love it, love it, love it i
Reviewed in the United States on February 3, 2026 by Herbert Johnson Jr
    • It's the best..for me
Style: Smart Watch Only Color: Sahara
This watch is fantastic! This is my 4th smartwatch. I've had the Samsung, 2 different Fitbits, and the apple watch. I am an iphone user. Nothing can compare to the apple watch paired with the iphone, it's seamless and the display is just beautiful. All that said I hate the way the apple watch looks. It looks like it was designed by girls for girls. Nothing against girls but I want a smartwatch that looks like a watch. I liked the look of the Samsung but just like the apple watch the battery life killed all the positives. This Amazfit T-Rex Ultra is beautiful, a man's watch, and I get 5 days of battery life normally. I know that's not the 20 days advertised but I like the always on display plus I wear it 24 hours a day everyday. The incredible things include nice display and many awesome watch faces. App is also pretty awesome. The workout and sleep feature details are also great, One huge thing is how fast it charges. I can pop it on the charger at 5% and it will be fully charged in 45 min and if needed you can charge it for like 10 min and get another day out of it. Bravo amazfit! Yeah you can't respond to text or answer a call on it which i'll admit are convenient features but you do see text and notifications and it lets you see the incoming call and reject it. To me the trade offs are worth it cause it's beautiful and pretty great all around. If you like your apple watch or your a girl then keep your apple watch because this is not really better...or is it? ... show more
Reviewed in the United States on March 1, 2024 by Timothy M Shepherd
    • Wanted to love it
Style: Smart Watch Only Color: Abyss Black
I had this watch for a month but the things it didn’t do or did differently than my Apple Watch was more than I could overcome. I really wanted to love this watch. It was built like a tank, looked awesome, and had a great app. The things I didn’t like were lack of being able to respond to text and calls via the watch. Heart rate monitor seemed to be off after upgrade. Not compatible with treadmill connectivity. Battery life was incredible, band options were limited. I have returned it and will stick with my Apple Watch for now. I miss it already. ... show more
Reviewed in the United States on January 6, 2024 by Farmstead
    • Indestructible Value. Highly Recommend.
Style: Smart Watch Only Color: Sahara
Purchased and used the original Ultra for 3 years. Works great, no scratches. I tend to use it for everything ... hike 10k each day, swim with it, bike, sleep with it. The battery is good enough to handle full bio and GPS tracking for a few days (about 2 hours a day) before I put it on a charger while working. I travel a lot, and have worked/hiked with it in Africa, Europe, on construction projects in the Middle East and the Caribbean. The Zepp app does a good job of tracking my sleep and active progress, ... I have an Amazfit scale that captures other metrics it integrates. The data syncs well with my Strava, Training Peaks and other apps. The watch has low power bluetooth and connects directly with my Favero Assioma bike pedals. The monitoring and navigation tracking is accurate enough ... not as good as when I had separate heart, cadence, bike computer, gps trackers, ... BUT I would never go back to using all those different kits for run, or bike, or swim when a single watch handles it all. ... show more
Reviewed in the United States on April 13, 2026 by Warren

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