National Geographics complete home weather station takes the guesswork out of monitoring your local weather. The fully wireless system sets up quickly and easily. The large, easy-to-read colored LCD displays indoor and outdoor temperature, wind speed and direction, wind chill, barometric pressure, and the heat index and dew point. Rainfall amounts are tracked daily, weekly and monthly, and are displayed in a bar chart. Weather-forecast icon. RCC clock with alarm. Multiple-channel capability. Requires four AA batteries and three AAA batteries (not included). Weight: 4.5 lbs.Dimensions: 15.5L x 5.5W x 10.5H.