The body temperature measurement takes longer than the mercury thermometer. Liquid crystal that is large and easy to see is nice, but it is painful to hold large objects for a long time aside for that. There seems to be a function to inform you by alarm when body temperature measurement is over, but I got angry because I can not hear a treble with senile deafness. I think that I bought another item even if I tripled the price if I know in advance. I think that it is impossible for young developers to understand, but if you advertise the product for the elderly, "measurement in a short time" and "alarm sound easy to hear with bass" are mandatory. I wrote a lot of complaints, but since I bought it I endure it.