Main Features: - Atomic radio controlled - Wireless caller line identity. - Clock with perpetual calendar display - Weather Forecast display - Atmospheric pressure display - Pressure trend display - Indoor temperature and humidity display - Outdoor temperature and humidity display - Alarm, and back light for reading in the dark - Beautiful black piano MDF finish Atomic radio controlled clock with weather station and wireless caller line identity. This clock offers so many functions that you never image. This excellent clock requires six "C" batteries for clock, two "AA" batteries for CID remote sensor, and three "AAA" batteries for the temperature and humidity remote sensor. (batteries included) Dimension: 7 1/4"H x 13 3/8"W x 1/2"D