The wireless weather station that's so accurate, it's worthy of the National Geographic name! This National Geographic weather station has everything you need to monitor the weather with accuracy that will astound your family friends. It comes with a wireless weather/wind sensor that gathers data and sends it to the indoor receiver at distances of up to 300'. Base unit features LCD monitor that displays indoor/outdoor temperature, relative outdoor humidity, heat index, wind speed and wind chill. Also has min/max memory that lets you track temperature readings over time and colorful wind chill/heat index temperature scale for quick reference at a glance. Receiver is 6.75"H x 4"W x 1.5"D. 1-year limited warranty.