

Amazfit T-Rex 3 Military Smart Watch 48mm, Fitness Watches with GPS (with Privacy), AI, Voice Control, Offline Maps, for Android or iPhone, 170 Sports Modes, 328ft Water-Resistant, Black
$279.99
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Price: $279.99
(as of Feb 26, 2025 18:56:11 UTC – Details)
The Amazfit T-Rex 3 tactical smart watch is designed for the adventurous individual seeking durability and versatility in their smartwatch. This smartwatch for men and women combines ruggedness with advanced technology, making it an ideal choice for outdoor enthusiasts. With a 48mm military-grade build, it resists extreme temperatures from 158°F to -22°F and is water-resistant up to 328 feet, perfect for surfing and freediving. This Amazfit watch boasts an impressive 27-day battery life, providing reliability even on extended expeditions. Its vibrant AMOLED display reaches peak brightness of 2,000 nits, allowing you to view maps and workout data clearly, even in bright sunlight or challenging conditions. As a GPS watch, it provides dual-band positioning with six satellite systems, ensuring precise tracking for your adventures. The Amazfit T-Rex 3 not only serves as a GPS watch but also includes health monitoring features, such as a heart monitor watch and a smart watch blood pressure monitor, keeping you informed of your biometric data. Stay connected with its capabilities as a smartwatch that can call and text, offering seamless communication. It is one of the premier smart watches for men and women, Android compatible, catering to those with dynamic lifestyles. Plus, with over 170 workout modes and AI training plans, this health tracker watch supports enduring fitness pursuits. Whether you seek a smartwatch for women or men smart watches, the Amazfit T-Rex 3 caters to a wide array of users, providing an extensive suite of functions and an authoritative design for any adventurer.
ULTRA-BRIGHT AMOLED DISPLAY: With peak brightness of 2,000 nits, the Amazfit smart watch delivers easy reading of maps and workout data in any light. Night mode and Glove Mode enhance visibility for clear viewing
DURABILITY FOR EXTREME CONDITIONS: This rugged smart watch, engineered with a 316L stainless steel bezel, withstands temperatures from -22°F to 158°F, and is water-resistant to 328 feet and can be used for freediving to a depth of 147 Feet
EXTENDED BATTERY LIFE: The Amazfit T Rex 3 offers over 3 weeks of power with typical use or up to 180 hours in GPS mode, providing long-lasting performance for hiking trips or outdoor activities
PRECISION NAVIGATION TOOLS: The smart watch for men and women provides free global maps with dual-band positioning. Six satellite systems offer fast, accurate GPS connections and precise turn-by-turn navigation
EXPANSIVE FITNESS TRACKING: This fitness watch offers 170+ workout modes and AI-generated training plans, providing real-time updates to guide your fitness journey from hiking to surfing
Customers say
Customers appreciate the wearable computer’s battery life, accuracy, and build quality. They find it accurate and well-made, with a durable design and a wide variety of stylish watch faces. The watch has great features like a camera remote and find my phone functionality, as well as all the functionality you expect from this kind of gadget.
9 reviews for Amazfit T-Rex 3 Military Smart Watch 48mm, Fitness Watches with GPS (with Privacy), AI, Voice Control, Offline Maps, for Android or iPhone, 170 Sports Modes, 328ft Water-Resistant, Black


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J. G. –
Durable and bright
I switched from an Apple Watch to the TRex. The main reason I wanted to switch was battery life. The Apple Watch at best could get 24-30 hours, but general use 24hrs was my average.I looked at the Garmin Fenix 8 but I really just didn’t want to pay that price. I watched review after review and felt the TRex was the right fit for my needs.Concerns before I purchased:- messaging- calls- no SpeakerI have had the device now for about 45 days.Durability – this is a solid watch. I have been doing a full kitchen gut and remodel. I have warn this watch the whole time and it looks like me. No scratches or evidence of any damage.Battery Life – I think confidently 18 days is consist. The first few days I was messing with the settings and looking it over a lot so battery was only 10 days after charging to 90%. I think you could get even more if I turned off notifications and brightness down.Navigation and menus – the OS is really smooth. Very fast to respond. I like the mix of buttons and touch screen. Especially when you have gloves on and suchInsights and Health – I think it is far more accurate on steps than my Apple Watch. I wore both watch’s on the same wrist for a full day and I never realized how many non steps my Apple Watch was picking up. I was sitting and typing at my desk. The Apple Watch picked up a nearly 100 phantom steps. The TRex picks up stress pretty well. It notices when I am thinking about a topic that is stressing me, like “is my flooring going to arrive in time?” Or “we only have x hours to complete this before the contractors are here!” Lots of good health habit reminders and such. I am looking forward to getting more use out of them once this project is over.Price, quality, and worry – when you have an expensive watch you worry about damage. It’s not to say I don’t worry about this watch, but when it’s 1/3 or 1/5 of the price of the other watches you looked at, it’s nice to be able to just enjoy it. Lots of compliments on its appearance and screen brightness. A lot of watch for the processThe gaps:I do have moments I wish I could do a voice reply to a text or quick reply, but Apple doesn’t allow that.No speaker is a kind of a bummer and I typically don’t pair my headphones to my watch, but that would be nice to be phone free for a run or workout.Overall, I really like the watch. I thought I would miss the Apple Watch integrations, but I don’t. The TRex still has the camera remote and find my phone features. I don’t really notice anything yet that I miss from my Apple Watch that I would say is a “send it back!” Thing.Updates are fast and so far little tweaks will continue to improve it. I would by it again.
Amazon Customer –
Excellent value for the cost.
I wanted a fitness tracker that can do it all, but looks like a rugged watch, and this watch seems to have nailed that. I’ve owned two Fitbits and a Google Pixel watch, and so far this watch out performs all of those. It tracks every health metric you could think of and the Zepp app has a very intuitive interface. Every so often it won’t sync and I’ll have to close it to for e a sync, but those times have been infrequent. I get 14 days on one charge, which is really great. It features more workout functions than any non-triathlete would ever use. I would like to see Zepp add an elliptical, but it does feature an “indoor fitness” mode that I use in lieu of elliptical. Overall, really great watch for the value.
Lester Regacho –
Get this now!!!
If you’re adventurous like me and need watch, get this now!After a few weeks with the Amazfit T-Rex 3, I can say it’s a true powerhouse for anyone who loves the outdoors and staying active. This smartwatch is built tough — its military-grade body, 328-foot water resistance, and very easy to set up mean I can confidently take it with me on water sports adventures, hikes, and any unpredictable terrain.The AMOLED display is a standout. It’s super bright, so I have no issues checking maps or workout stats even in bright sunlight, and the night mode is easy on the eyes when I’m in lower light plus it’s scratch resistant. The battery life is exceptional; with over three weeks on a typical charge and hours of extended GPS, it’s perfect for long weekends away or days when I’m constantly on the move.One feature that’s been a game-changer for me is the one-tap health indicator through the Zepp Health app. It lets me check my heart rate, oxygen levels, and stress in seconds. The variety of workout modes keeps things interesting, and the personalized AI training plans help me stay on top of my goals.The GPS accuracy and offline maps have been reliable, and the built-in compass adds peace of mind when I’m exploring new areas. The watch faces are fun to switch up based on the day, giving the T-Rex a bit of a customizable edge.Overall, the Amazfit T-Rex 3 is a solid companion for outdoor enthusiasts and travelers who want both durability and smart functionality. It’s not just a smartwatch — it’s become an essential part of my everyday routine!
Zack –
Great hardware with some UI quirks
I got this watch after 8 years with a few different models of the Garmin Fenix. Overall, it’s not a bad watch, and it does what I expect of it. It tracks everything I need, the screen is amazing, the HR sensor works great (better than my Garmin Fenix 6 Pro), and the battery life is good as well! It’s unfortunate that a company that makes such good hardware doesn’t spend a little more time on the software side. The app is the weakest point. The overall layout isn’t very polished or easy to navigate. There are some inconsistencies in what you can and cannot change, but most importantly, there are a lot of translation and grammar mistakes. When you read some of the health insights, you can’t help but wonder if they were done with the help of Google Translate. It just ruins the whole experience and makes it harder to take any of the data provided seriously.
ERIELTON FELIPE –
A loja faz entrega expressa pelos correios, de São Paulo para o Rio, chegou em dois dias. O smartwatch é sensacional, só atente as pulseiras, só as dele que cabem, as dos outros t-rex não
Wayne Burger –
Love using the features, this watch is always being compared to more expensive Garmins and apples. Still haven’t had to charge it since delivery 10 days ago.
Luis Enrique valdenegro León –
Muy bueno de verdad buena capacidad de pilas con las funciones que necesito la pila me dura más de 30 días super bien.Nomas deberían de hacerle una actualización por que aveces tiende a calentarce un poco mi teléfono y es un teléfono gama alta
Vroom –
One of the best smart watch of segment. Rugged built, nice looks.Performs flawlessly during work outs. The data measurement is also accurate.I have just shifted from samsung galaxy watch 6 to this watch and am just amazed with the features provided and the battery management. I feel samsung should learn from amazefit.
Dr A. –
Best looking smart watch by amazefit till today , menu feel so fluid and smooth , quality feels very good and rugged , all the sensors work perfectly and accurate , best bang for the buck .