A thermometer with a rigid probe, which has all essential functions. It takes your underarm, oral or rectal body temperature in a quick, easy way. It's fast, with measurements taking between 60 and 120 seconds. The display is easy to read, the thermometer stores the last measurement, and it emits a sound at the end, which is different if it's above 37.5°C.The batteries will last for at least 1000 measurements, and are easy to replace.