I bought this recently and as above comments mention,not very accurate. Can do 2 readings and be almost 2 degrees difference
It seems very cheap for something that needs to be accurate tbh :/
I paid £30-40 a while back for a decent quality one and even that was horribly inaccurate. I wouldn't waste money on this personally.
I really wouldn't trust anything cheap like this to give me an accurate forehead temperature.