Atomic Wall Clock & Thermometer

Time and weather wall clock is accurate to 10-billionths of a second per day, picking up the radio signals continually broadcast by the cesium atomic clock at the National Institute of Standards and Technology in Colorado. Large LCD numerals display the time, day, date, indoor temperature even shows outdoor temperature with information transmitted from the wireless outdoor sensor included. Also includes alarm, snooze, three-language display (English, French or Spanish). Fahrenheit/Celsius selectable. Can be wall-mounted or free-standing. Total of four AA batteries needed (not included). 11-1⁄2"x1"x7-1⁄2" tall.