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

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!

I had every single T-Rex version but this one is definitely top notch. New software, improved interface, 20-day battery life on a regular use, steel case are definitely worth the money. I like that you can change the bands on this ultra model so I fitted mine with carbon fiber Luminox band. Totally changes appearance of the watch without adding any weight. I took it on 10 day vacation to Mexico and swimming in the ocean was no problem with this watch.Quite accurate heart rate and step counter as well as O2 levels. Didn't try blood sugar or blood pressure monitor but that's not what I bought it for in the first place.Two small nuisances... On the 1st time getting GPS lock can take some time but it works fine afterwards, second...I still do not understand why the Amazfit didn't implement option to increase font size on the watch on the 4th iteration of Trex.Screen resolution and AMOLED display are certainly excellent and I don't see why they can't or won't do itBottom line I would recommend this watch to anyone looking for rugged SmartWatch with long battery life, extensive amount of watch faces and customization, external applications and so on.It is not on pair with Garmin watches for professional athletes but for every day use for fraction of the cost definitely highly recommended.

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.

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.

FIRST OF ALL, THIS WATCH'S MANUAL SUCKS BIG TIME, ITS SO VAGUE, UNCLEAR AND INSUFFICIENT THAT YOU NEED GOOGLE AND YOUTUBE TO SEARCH FOR ANSWERS.SECOND OF ALL, LOW QUALITY OVERALL, WOULDNT RELY ON IT AT ANY POINT, GOOD FOR KIDS TO PLAY, FOR SURE NOT FOR MILITARY PERSONEL, VERY INACCURATE MEASUREMENTS INCONSISTENT DATA IN SEVERAL WORKOUT MODES I TRIED, NAVIGATION INTERFACE JUST TERRIBLE, NO POI LOCATION TO INPUT, NO CLEAR POINTER WHICH DIRECTION TO HEAD, EVERYTHING SUPER TINY DESPITE 1.39 DISPLAY, NO ETA, NO REMAINING DISTANCE TO DESTINATION, NAVIGATION ON SCREEN IS INCONSISTENT TOO, WONT KNOW IF I ARRIVE AT DESTINATION CAUSE WATCH DOESNT ANNOUNCE, NONEXISTENT CUSTOMER SERVICE, WONT RESPOND AT ALL TO MY QUESTIONS ABOUT IT NEITHER VIA EMAIL OR PHONE, NOT WORTH THIS MONEY, JUST ANOTHER CHINESE POOR ATTEMPT TO SELL JUNK FOR LESS MONEY TO BEAT COMPETITION AND TO CLAIM AT THE SAME TIME ITS COMPETETIVE QUALITY, ITS NOT, YOU CAN SELL IT ON FLEA MARKET FOR $50, THATS IT....STAY AWAY FROM THIS JUNK!!!