Contactless Digital Forehead Thermometer, Fast 1 Second Readings for Body or Object Temperature, Backlit Display, Fever Alarm & Color, Memory Recall[FAST, ACCURATE READING] This handheld thermometer is FDA registered and takes only 1 second to read temperature. The temperature measurement is accurate within 0. 5F and is displayed clearly on the large backlit LCD display. [CONTACTLESS PROBE] Uses an infrared sensor to measure body temperature it is completely contact free making it safer and more sanitary to use than traditional thermometers [CELSIUS AND FAHRENHEIT] Easily switch between Celsius