EASY TO READ & SAFE WITH ALARM: It comes with a sanitary storage case. Open the plastic cover and place it under your tongue and close your mouth for about 45 seconds. Loud beeping alarm indicates the completion of the measurement. Memory function shows the last temperature reading on large face LCD display after the power is turned on. This thermometer does not contain mercury which means no chance of broken glass. MEDICAL TECHNOLOGY & PROFESSIONAL ACCURACY: The safety 1st rapid read thermometer is small in size and a clinically accurate thermometer with high precision at ±0.2ºF in the range of 89.6-109.2 ℉. It measures body temperature to 1/10th of a degree precision (e.g. 97.1 ℉) in Celsius or Fahrenheit. Measurement units can be switched between ℉ and ℃ according to preference. The best choice for families, schools, hospitals, and clinics. FLEXIBLE TIP & EASY TO CLEAN: This thermometer for infants and adults has an extra soft tip that you can flex the probe tip if you want. The waterproof tip also lets you clean the thermometer in an easy and hygienic way. A flexible thermometer that provides safe, quick, comfortable, and clean measurements for your babies. MULTI-FUNCTIONAL with AUTO-SHUTOFF: Measures oral, rectal, and auxiliary temperature. For hygienic reasons, keep the same measuring method with the same thermometer. The power will be shut off automatically if there is no rising temp for 10 minutes. CONVENIENT SIZE & SANITARY STORAGE CASE: It is light and comes with a mini plastic storage box that covers the whole thermometer for protection. Approximately 100 hours of continuous use for each battery. Keep a portable thermometer in your pocket and take it to school, business, travel, or anywhere.