The Vicks® Forehead Thermometer provides innovative technology and has been clinically proven to make temperature taking easy for both parents and children. Gently slide the thermometer onto the forehead for an accurate reading instantly. Quick 3-The Second Reading Non-invasive and suitable for use even on a sleeping baby Insight Fever features a color-coded display system that helps you better understand the meaning of your child's temperature - green, temperature is correct, yellow corresponds to fever or distemper, and red corresponds to fever.