Product review (5 stars): Thats pretty accurate in my book
3 guesses where I have the sensor probe located.  Mom always said leave it in for at least 3 minutes so I did.  Then I left it in a while longer to see if it varied.  It didn't and stabilized at this number.  Thats pretty accurate in my book.

It appears as if the probe updates itself about roughly every 30 seconds, and as the probe changes temperature the temperature rises until it reaches equilibrium.  Its not an instant measure kind of thing.  It really did take a couple of minutes for it to properly climb to my body temperature.

I was tempted to take off a star for no on/off switch.  You will have to remove the batteries (easy to do).  But this precise accuracy deserves recognition.