The Braun Forehead Thermometer has professional accuracy with a gentle forehead touch. It is quick and easy to use and has a silent mode for middle of the night readings. The temperature guidance changes the backlight from green to yellow to red depending on the temperature. Positioning light helps with night time use. 1) Large, easy to read screen, 2) Ergonomic for both mom and child, 3) Measures in just 2 seconds, 4)Fahrenheit or Celsius readings, 5) 2 AA batteries included. White.