Mabis - TenderTykes Instant Ear Thermometer, Dual Scale, Clam Shell Packaging Takes tympanic readings in one second Clinically accurate Nite-glo display for readings while child is sleeping Peak temperature tone Probe tip fits comfortably into even the smallest ears Fever alarm sounds for temperatures above 100.4F Memory recall of last 10 measurements Auto shut-off Temperatures can be displayed in either Fahrenheit or Celsius Does not require probe covers Canvas, zippered storage case One lithium battery Detailed guidebook in English and Spanish Five-year limited warranty