I had trouble initially, as I didn't have a screw driver small enough to under the screw to get the battery in. I didn't like that.
I can't figure out how to permanently set it to Celsius, as everything I try doesn't seem to work.
Other than that, it is great.
My husband has terminal cancer and I find this non-invasive to take his temp twice a day.
I have recommended it to my friend, and he had his delivered yesterday.
I love how fast you also delivered it.
I initially found the reading slow, but then I learned to adjust the distance between the pointer and the patient's forehead to obtain a swift reading. Fantastic I don't have to insert and discard any probes. The delivery was lengthy, but the wait was worth it.