Ok, so I am impressed.
Did not read instructions, simply opened the box, set the time zone with the slider on the back, inserted the 3 included batteries, and closed the cover. That’s it, when I turned it over, it was set with the correct time(well, within 1 minute initially) and correct date. (temp and humidity were also very close to other thermometers and humidity meters I have).
Display is clear and large. For what I want to use it for, it should be excellent.