1 Brand Recommended by Pediatricians* Proven More Accurate than Forehead or Rectal**Professional Technology Ensures Accuracy Every TimeJust Seconds: Fast, Gentle and Easy to Use Recommended for Infants, Children and Adults °F or °C Readings Braun ThermoScan® Infrared Ear ThermometerProtective Case with Lens Filter StorageDisposable Lens Filters 21X2 AA Alkaline Batteries Kit Includes: ThermometerProtective Case21 Disposable Lens Filters2 Batteries Why measure in the ear? The ear canal is the best site to measure a fever because of its close proximity to the eardrum, which shares the blood supply of the brain's temperature control center. This site allows for a more accurate reflection of the body's core temperature.  Exclusive pre-warmed tip technology is designed to minimize the cooling effect of the tip inside the ear canal, providing accurate measurements time after time.  Unique positioning system uses a light and beep to confirm proper positioning.  Memory function recalls the last temperature reading.  * Based on a survey reporting that of the surveyed pediatricians (1) who recommend a brand of thermometers, Braun is the most recommended; and (2) who use a branded thermometer, Braun is the most frequently used.  ** Measurements in detecting temperature changes. Nimah, Marianne M ., et al. "Infrared tympanic thermometry in comparison with other temperature measurement techniques in febrile children." Pediatr Crit Care Med 7.1 (2006): 48-55.  *** Herzog L ., Phillips S. Addressing Concerns About Fever. Clinical Pediatrics. 2011; 50( 5): 383-390.