This forehead and ear thermometer are recommended by medical experts. The Metene Thermometer went through extensive and vigorous FDA clinical tests to confirm its consistency and reliability. You are able to switch freely between the forehead and ear detection mode with ease to get the most accurate temperature. This thermometer can store and recall up to twenty readings for baby and adults to help you track the trend of body temperature. With two buttons head and ear, it provides you with fast, clinical, and accurate instant temperature within one second with the most precise reading.