We have tested the quality of our medical thermometer, and we guarantee accurate results. It calculates the temperature at 5 cm distance in less than a second! 1. Precise non-contact infrared digital thermometer, lightweight, and portable for use. 2. Body temperature measurement: aiming towards the forehead or behind the ear lobe with a distance of about 1-5 cm. 3. Backlight LCD display, green for normal temperature, orange for low fever, and red for high fever.