This flexible tip digital thermometer beeps when ready, has an easy-to-read digital display, a low battery indicator, offers results in 30 seconds, for oral or anal use, includes auto shut-off, memory of last reading and are water resistant. They have a high accuracy temperature measurement in a range of 89.6 to 109.2 Fahrenheit, as well as measure 32.0 to 42.89 Celsius. These thermometers come packed in a clear acrylic case and illustrated box. They are FDA approved.