To achieve the most accurate reading possible, Omron's worry-free thermometer takes 250 temperature scans in one second. It's fast, it's accurate, it's worry free! Features: Easy-to-use, one-button operation. Auto shut-off. 250 scans per second. Large, back-lit display. Convenient storage case to hold thermometer and lens covers. Measure in Fahrenheit and Celsius. Last temperature memory. Contents: 1 thermometer, 1 storage case, 21 lens covers, 1 long life replaceable lithium battery, 1 illustrated English/Spanish instruction manual.