Thermometer reliable, easy to use from 2 years environcar before the channel is too étroit.j'ai make several trials: ear and rectal thermometer to compare and the results are much the same. Think out the sink in the ear (small movement turning) sometimes the result is different from 1 or February 10, but what is important is to know if there is a fever, 38.4 ou38 6 matter. This is certainly the best.