Product details:

Keep up to date on local conditions with this La Crosse ? Color Wind Speed weather Station. Adjustable back-lit color display shows time, date, indoor and outdoor temp and humidity, along with graphic forecast icons and "feels like" temperature. The wireless outdoor temperature and humidity sensor has a range of 330 feet and updates conditions every minute. The remote windspeed sensor has a range of 300 feet and measures wind up to 99 mph. The base station comes with 5.0 volt adapter with an optional three AA battery backup. The external temp/humidity sensor requires two C batteries and the remote windspeed sensor requires two AA batteries. No batteries included.