Oregon Scientific RMR500ESA Clima-Control Solar Powered Climate Monitor and Weather Forecaster with Mold Alert Built in solar panel converts sunlight energy into electrical energy for the 600mAH rechargeable battery Displays temperature and humidity data from up to three different remote locations Radio-controlled clock and calendar sets itself for perfect time and Daylight Savings where applicable Displays weather forecasts with graphical icons: sunny, partly cloudy, cloudy, rain and snow Mold alert alarm indicates when conditions might welcome spore growth; measures 5.2 by 1.2 by 5.2 inches; weighs 10.4 ounces