Infants and kids feel restless when they are sick. Taking temperatures in such a situation to keep track of their health conditions can be tricky. The Omron TH839S digital ear thermometer comes as a saviour to get near-perfect body temperatures without causing any discomfort to your baby. It displays the body temperature within seconds using its one-second quick measurement technique. There is an ON/MEM button to turn on the device. Just position the probe into the ear canal and turn on the device, you will hear the beep sound indicating the temperature has been read and in no time you have the readings displayed. It also displays the readings in both Celsius and Fahrenheit. You can recall up to 10 previous readings.