Reports your current weather conditions and alerts you to oncoming storms from up to 25 miles (40 kilometer) away, with the included lightning detector. The weather station measures indoor and outdoor temperature, humidity, barometric pressure, wind speed, wind direction and rainfall, all visible on a vivid color display. Stream real-time information including moon phase, indoor comfort level, feels like temperature, and more. Self-calibrating forecasting pulls data from a sensor outdoors to give you the most accurate forecast for your exact location. Outdoor sensor temperature range: -40° to 158° F (-40° to 70° C). Humidity range: 1% to 99%. Wind range: 0 to 99 mph. Rainfall: 0.01 in. and up. Wireless range: 330 feet. Display power: 5V. AC adapter and four AA batteries (included). Lightning detector sensor: 4 AA batteries (not included).