I would have given this watch 5 stars but there is one very disappointing issue. I ordered the black watch. In the product photos, the watch body and face look all black. But the watch I received has a black body, but the ring around the face is grey. It is clearly a different color, and that changes the look of the watch entirely. And in my opinion, it's a change for the worse. If Amazfit's customer team were to see this review, I would love a response as to why my watch has grey on it, and if there is a way to exchange it for a watch that is truly all black.

The good: I like the watch's large face and chunky build. Just what I wanted. It does a good job of tracking activity, and I really like all of the options to change the digital watch face. It's a cool, functional watch overall. It's also comfortable with a very adjustable band.

Does almost everything i need. First bought a regular square shaped "apple like" watch but wanted a more rugged one as I beat them up. It tracks my laps in the pool well once I entered the length, good GPS and accurately measures my hikes and runs, I use the timer and the workouts mostly, I found that he HRM is not reliable when I run, it spikes to 160 and the beginning of the run which is normal for me but it does not come down unless I stop and sit down, i started running with a chest strap HRM and right on after a while I come down to 90-120 but the watch stays up there. Otherwise I like it, I have already some scratches and that would have looked bad in a "dress like" watch but on this it does not matter. All together I am happy with the watch, i think it is a good product for the price. I wander if I could disable the HRM and pair it with my Wahoo chest strap, I will look into it. Very good battery like, I charge it every 5 days, it depends of how you use it of course, and I like the sleep tracking app, neat and is telling me that I sleep better than i thought I was.

I won't buy another iwatch until they have a battery that lasts as long this watch. Half the price and very similar features. It also has a more robust bezel that can bang into stuff unlike the iwatch that needs a clunky aftermarket case to protect it. I also prefer this watchband to the iwatch. It's comfortable and will fit anyone out of the box. Full send.

I specifically ordered the T-Rex Pro b/c of the grey color scheme. The light grey strap and case, dark grey bezel and blue indices gel so well together. It is, by far, the classiest of the bunch. And that includes other variations of the T-Rex line.

The watch is surprisingly light. You may guess that when you pick it up, the 'quality' isn't there. This is a throwback mentality from a bygone era. The truth is that material science has advanced far beyond the buzzword materials of the jet age. You don't need a hunk of steel on your wrist anymore. The sensors that read your biometrics don't care. And if the watch case happens to fracture from the insane 'mil-spec' pressure that was put on it, guess what, it was on your wrist... and you need to be going to the emergency room.

All to say, plastic, properly composed and formed, can withstand far more pressure than your bones. Be grateful that we live in this time. And enjoy the light weight that this timepiece offers.

The display is easily the most important aspect of the modern watch. The Amazfit does not disappoint. The AMOLED is sharp and with deep contrast. There is zero to complain about in that department... The ambient light sensor, however, is a little slow to respond. In a dim setting, it takes a little longer than, say, an Apple Watch, to bring up the brightness level. So to the Amazfit engineers I would say, "This is a very simple comparison."

The buttons are tactile, easy-to-feel and press. The knurling is perfect. Don't change a thing.

The graphics portion of the SOC are perfectly adequate to drive the display with fluid motions and zero lag. I don't feel that the watch is generating any heat or struggling to keep up. It's a testament to how far microelectronics have come.

Which brings us to the elephant in the room; battery life. In short, the battery life is exceptional. It lasts so long that, at some point, you feel that you need to charge it 'just because'. The watch reminds me of cell phones from the olden days, when your Nokia 5100 would go for weeks between charges. Can we please get back to that??? Anyway, thank you Amazfit. You delivered on this in spades.

I bought this watch when the T-Rex 2 and Falcon were available. The Ultra was also just announced (at the time of this writing). While I would be happy to review any of those watches, I would urge Amazfit to consider one thing; develop your software. As is stands, your software is adequate. But in order to lead in this segment, the software has to take priority above all else. Titanium bezels and more bolt faces don't move the needle. Well-considered and well-developed software does. I hope you're listening.

I like this watch very much, with two major caveats. There are lots of features that I find handy. It has a fairly long battery life. The magnetic charge is very convenient, as long as you don't bump it resulting in it disconnecting from charging the watch. I like the larger size of the watch, and the different faces I can choose from to quickly show me the things I care most about on any given day.

Some of the faces I've used (that ALL include the time, and are all different in colors and styles) are:
-Day of week/ FULL date/ battery life
-Day of week/ day of month/ heart rate/ battery %/ step count
-day of week/ month of year/ day of month/ battery %/ step count/ heart rate
- battery %/ training load/ heart rate/ O2%/ day of week/ day of month/ local outside temperature high & low
-step count/ weather/ FULL date/ bpm/ kcal/ distance/ battery life
-bpm/ FULL date in a different format/ step count/ kcal/ distance/ battery %/ local outside temperature
-day of week/ local outside temperature/ step count/ bpm

Caveats:
-You cannot use the watch while it's charging (but that's standard, so not a huge issue).
-I wear my watch higher up on my wrist, onto my forearm. This wouldn't be a problem, except that the inside of the watch band is textured, so it winds up digging into my skin, causing my skin to become raw after a few days. It's about the length of time it takes to lose battery life, so I charge it overnight when it's really low to get a break from that. There are other bands that can be purchased to replace the one it comes with. I just have yet to get one.
-The app is not very intuitive, which could make a huge difference if you want to see your sleep, etc. metrics over a longer period of time. Honestly, I can't find how to see more than the last day of activity.

Overall, I really like the watch. I just wish it came with a different band and the app was more user friendly. I would probably even gift one, including an extra band in case the repient has the same issue with the standard as I do.