"You’ll know if it’s cold outside even before you get out of bed in the morning. For that matter, with the La Crosse Projection Alarm Clock, you won’t even have to turn your head. Just a quick glance at the ceiling tells you the time and temperature. The clock monitors indoor and outdoor temperature, relative humidity, and the time in hours, minutes, and seconds on a clear digital screen. Or use the projection feature to display the info on the ceiling or wall. Use the projection arm to adjust the display toward any flat surface you can see from bed. Included sensor sends wireless signal to the station from up to 330 feet. Constantly updates as often as every 4 seconds for immediate weather information. No assembly required. Atomic time and date automatically resets to Daylight Savings Time. Alarm includes snooze function. Operates with the included AC power adapter or 4 AA Alkaline batteries (not included). Dimensions: Receiver: 3.6"""" L x 5.6"""" W x 1.4"""" H Weight: 0.85 lbs"