






🕶️ Tactical toughness meets sleek tech — own the adventure, own the moment.
The Amazfit T-Rex Ultra is a rugged 47mm military-grade smartwatch crafted from 316L stainless steel, featuring a 1.39-inch HD AMOLED display with 1000 nits brightness. It offers dual-band GPS with six satellite systems for precise navigation, supports water resistance up to 100 meters including freediving, and boasts an industry-leading 20-day battery life. Compatible with Android and iPhone, it’s engineered for professionals and adventurers who demand durability, clarity, and endurance in one sleek package.


















| ASIN | B0BV2SM914 |
| Additional Features | 30m Freediving Support, Altitude Assistant, Compass, Mud-resistant, Ultra-low Temperature Operation |
| Age Range Description | Adult |
| Band Color | black |
| Band Material Type | Stainless Steel |
| Battery Average Life | 480 Hours |
| Battery Capacity | 700 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Best Sellers Rank | #136,739 in Electronics ( See Top 100 in Electronics ) #2,327 in Smartwatches |
| Brand | Amazfit |
| Built-In Media | Charging Cable, Smart Watch, User Manual |
| Case Material Type | Stainless Steel |
| Clasp Type | Tang Buckle |
| Closure Type | Buckle |
| Color | Abyss Black |
| 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 |
| Connectivity Technology | GPS |
| Controller Type | Android, iOS |
| Customer Reviews | 4.3 out of 5 stars 355 Reviews |
| Display Type | AMOLED |
| GPS Geotagging Functionality | GPS Enabled |
| Human Interface Input | Buttons, Touchscreen |
| Item Dimensions | 1.86 x 1.86 x 0.53 inches |
| Item Type Name | Smartwatches |
| Manufacturer | Amazfit |
| Maximum Display Brightness | 1000 Nit |
| Memory Storage Capacity | 2.3 GB |
| Metrics Measured | battery |
| Model Name | t-rex ultra,ultra |
| Model Number | A2142-Black |
| Operating System | Zepp OS |
| Resolution | 466 x 466 |
| Screen Size | 1.39 Inches |
| Shape | Round |
| Special Feature | 30m Freediving Support, Altitude Assistant, Compass, Mud-resistant, Ultra-low Temperature Operation |
| Sport Type | Fitness |
| Style Name | Smart Watch Only |
| Supported Application | GPS |
| Supported Satellite Navigation System | GPS |
| Target Audience | Men |
| UPC | 850030107817 |
| Warranty Description | 1 year manufacturer |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Watch |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | BASE |
E**4
Great watch! Terrible band!
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!
L**S
Excellent smart watch
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.
W**N
Indestructible Value. Highly Recommend.
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.
S**R
It almost seems cliché to say, but it really is amazing.
My last smart watch could go for about a day and a half on a battery charge when it was new with something like 6-7 hours to recharge. After a beautiful relationship that lasted 7 years, I finally had to say goodbye to it because it was down to about 6-7 hours per charge. I've had the T-Rex for two months now and I've only had to charge it twice - and one of those was just to top it off the day I received it. And it recharges in about 45 minutes. Holy cow. I mean, they claim it but I didn't believe it. Then we get to its list of features. I don't typically wear a watch while sleeping, but I've worn this one a few times just to see what it has to report. What it's able to figure out from just a few sensors on the bottom of the watch is pretty impressive. I haven't used its GPS capability yet, but have worn it during workouts and it's impressive there, too. I had never heard of this brand previously so I had a little bit of trepidation, especially with this watch's sticker price, but I have to say that I'm quite happy with the purchase. DO keep in mind that it's a heavy watch, which I knew wouldn't be an issue for me. I also paired it with a fairly heavy metal band, so it's 5 oz/ 140 grams on my wrist.
F**D
Wanted to love it
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.
H**R
It functions well
Love it, love it, love it i
G**.
Not accurate for a $400 Watch
First off, i am an apple person and have been using their products for a long time. Then I saw few videos of Amazefit Ultra having some good features when it comes to workout and outdoor activities. I was very exited and ordered one. The look and feel of the watch is great and the band is also elastic enough that even if you wear it slightly tighter, I won’t hurt your wrist. Then I installed this app (Zepp) and found few features that were either confusing or redundant., Anyways I wore it to the gym to see the heart rate was totally inaccurate., I usually workout at 130+ bpm but it was showing half of it and then the steps taken/ distance were totally off than the reality. Overall doesn’t serve the purpose.
T**D
It's the best..for me
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?
A**A
Increíble
Un reloj muy robusto, una pila de muchísima duración, mediciones muy precisas y en general una experiencia de uso excepcional. Muy recomendado.
F**O
Nuevo y pide contraseña
Compre este smartwatch y al quererlo configurar me pide contraseña, es normal o será que no es nuevo ? y si fuera normal cual es la contraseña
Trustpilot
1 month ago
1 month ago