Product review (2 stars): returned (faulty)
My unit was faulty on arrival, the button that switched between Celcius and Fahrenheit did not work.  One positive--the manufacturer was very quick to respond to my email inquiry, to confirm that my device was not operating correctly.

It's plastic but decently constructed, simple to operate, easy to read, and so forth.  If my unit had not been faulty, I would give it a higher rating.  I don't always approve of folks posting a lowered rating because of a faulty unit, but here we are.  I think that most others did not get faulty units, so for the price it might be worthwhile trying out.  Certainly the price isn't high, and returns are always possible with Amazon.