Fast measurement, normally in 20 seconds, with an alarm to advise once the temp is taken. This classic electronic thermometer is clinically accurate with high precision. The digital thermometers LCD Display stores the last readings to track changes. Measurement precision in degrees centigrade and within +/- 0.1/0.2 degrees. SAFE AND FEVER ALARM - Perfect for Infants, young child, toddler, newborn and adult by mouth, rectal and armpit. Comes with clear instructions. A fever alarm will sound with a fast sequence of beeps if the temperature is 37.8 or higher. EASY TO CLEAN - The waterproof sensor tip allows you to clean the clinical thermometer in an easy and hygienic way. You can freely use it for the whole family as you can clean it with alcohol wipes after each use and then store in the storage tube that it comes with. CLEAR LCD INDICATOR - When the measured value is lower than 32 degrees, the reader shows Lo; If higher than 39 degrees, it shows Hi. With memory function, the last measured value after power on, and auto display, this helps you easily track the temperature progress and your health. AUTO POWER OFF FUNCTION - The personal thermometer has an automatic shutdown function. If no action is taken, it will shut down after 10 minutes. In order to extend the battery life, it is recommended to turn off the power after use. Batteries are included. Can use as a under arm thermonitor and armpit thermometer.