Fast, takes 12 scans in one second. Large, easy-to-read display. Patented sensor technology for accurate measurement which meets ASTM (E1965-98) standard. Easy to use, sleek design fits comfortably in the ear and in your hand. Recalls last temperature reading. Lighted display for easy night time reading. Auto shut off to extend battery life. Able to switch from Fahrenheit to Celsius. Three-year limited warranty.