Contactless instant forehead thermometer, as shown. Built in fever alert. No touch safe and hygienic: Built-in infrared temperature sensor, reads body temperature within 1.18 inches of the center of the forehead without physical contact An ultra-sensitive infrared sensor collects more than 100 data points per second while distance and environmental sensors combine to account for other variables; ensuring maximum accuracy every time temperature is taken. The intuitive single-button control design thermometer reads the temperature in just 1 second from a clear bright extra-large LED screen, even in total darkness. The quiet vibration alerting ensures there is no buzzing noise and no disturbance. Requires 2 AAA batteries, included