Bushnell 7-Day Weather FX Alarm (Silver) 7-day wireless weather forecaster delivers reliable, real-time forecasts from Accuweather.com for over 150 cities Forecast is automatically updated wirelessly every 15 minutes, 24 hours a day, 7 days a week No sensors, no installation, no subscription required; runs on batteries or A/C power Provides severe weather alerts as well as air quality, UV index, and allergy alerts Satellite-synchronized clock never needs resetting; 1-year limited warranty