PharmaSystems uTemp 10 Second Digital Thermometer is an oral or under arm thermometer. The thermometer works fast to get an accurate read in about 10 seconds, has a easy to read display, has a fever alarm and has an on/off button for when it is not being used. Having a digital thermometer is safer since there is no chance of broken glass or mercury poisoning. This thermometer stores the last measured temperature and comes with a protective plastic case, battery and instructions.