Additional features: infrared sensor simplifies temperature measurement—ideal for screeningmeasures in about 1 second without patient contact eliminating the concern of cross contamination or costly probe coversmeasurement feedback system signals proper operating distance for accuracymeasures at a distance of 4-6cm (1.5-2.5") from patient's foreheaddual mode - body and objectlarge backlit lcd display is easy to readwide temp range30 reading memoryfahrenheit-celsius switchableauto-off function after 30 seconds conserves battery lifeaudible beep when measurement is complete night mode mutes volumecompact ergonomic design 5" x 2.06”x 1.75“ ( 52.4mm x 44.5mm x 129.9mm) weighs approximately 3oz (87g) with batteriesuses 2 “aaa” batteries (included)"