I opted for this model of thermometer because my baby will not really appreciate that we take her temperature and said that previous models "fast" that I bought in pharmacies did fast as the name. .. For this one, nothing to say, except that it is perfect! Even under the arm, the temperature is displayed in seconds! My baby will hardly aware! I had read reviews that the beeper is too weak for my part I can not find ... indeed it is not strong, but more than enough for you to hear. As a bonus the colors are pretty!