Personally, I work in construction with dust, mud, and other things that wear out a phone faster. After 1.5 years of use, the battery barely has 40% after my work. It has fallen many times resulting in the metal casing being deformed all around. As for the thermal camera, yes you have a thermal camera, which not all phones have, but it is quite slow. If you are getting it for the thermal camera, it is not worth it. Now when I got it, it was around 550, the new model costs less and rightly so because as for its software, it is old. After using CAT phones for 5 years, I had to switch because they were not satisfactory enough in performance compared to simpler phones that are not rugged. A good case and a good screen protector instead of spending 550+.

To be clear. If you want a thermal camera with a satisfactory refresh rate and resolution, it's perfect for its price. However, if you also want screen resolution, processor, speakers, radio, waterproof, lightweight, powerful, and coffee-making capabilities, then it's not for you.
I've had it for 3 months, I use it daily for photovoltaics, and it has saved me.
It's heavy, it's sturdy, the screen isn't good in the sun, the battery lasts two days with one card, if you don't center the microphone, they can't hear you, it doesn't have good noise cancellation for external noises, and the speaker is just okay.
In conclusion, if you don't need the thermal feature, it's a mediocre phone.

Reliable, stable as a smartphone, but the battery has small capacity.
The thermal camera it has is experienced on its own.
Unfortunately, there is a small range of famous rugged phones in Greece. I hope Caterpillar makes the necessary corrections/additions in the next model.