Easy to use tympanic thermometer measures core temperature instantly and beeps when complete. Convenient, economical, probe covers make it the ideal instrument for use on all types of patients. Features: 1 second measurement, large illuminated display, F/C switchable display, fever alarm at 99.5 F (37.5C), and last reading memory. Includes 1.55v (CR2032) lithium battery, 20 probe covers in convenient dispenser, and desktop storage caddy. Latex-free; 2-year warranty