Decide what to bring on your bird-watching excursion with this wireless weather station that keeps track of conditions and perfect time with a clock controlled by a signal from the U.S. atomic clock. The easy-to-read graphic readout displays the indoor and outdoor temperatures, date, time, alarm, moon phase, tidal indicators, barometric pressure trend arrow, and weather forecast icon. Includes outdoor temperature sensor with LCD readout, 330' transmitting range, and temperature range of -21.8 degrees to 157.8 degrees Fahrenheit. Five AA batteries, not included. Receiver is 4 1/2'' W x 7''H. Wireless sensor is 1 1/2''W x 5 1/2''H.