Nexcare Rapid Digital Thermometer offers a fast 10-second temperature read-out with guaranteed accuracy—clinically proven to match glass thermometer accuracy, but without the worry of breakage or mercury, A large night light display makes for easy reading, and a last temperature recall feature helps keep track of readings, Read-outs for Nexcare Rapid Digital Thermometers can be done in Celsius or Fahrenheit, These rapid digital thermometers can be used orally, rectally or under the arm, A battery and storage case are included, 10 seconds time based on average times for rectal use in clinical testing, SKU: ALVHT11637