The American Red Cross Rapid Read Ear Thermometer from The First Years produces accurate one-second readings every time. It offers clinical accuracy and features an extra large digital display. It beeps and flashes at 99.5 degrees and higher. Other features include memory recall, an electronic sensor, a long single beep when the temperature is reached and automatic shut-off, and it stands upright. Includes 2 replaceable "AAA" alkaline batteries.