La Crosse Technology WT-3181P 18" Outdoor Atomic Wall Clock with Temperature/Humidity

This 18" outdoor clock sets itself to the U.S. atomic clock in Boulder, Colorado, thus maintaining absolute time accuracy. An analog hygrometer and thermometer allow you to view the weather conditions from outside your home. This clock is weather proof.

Whether mounted indoors or outdoors, this 18-inch round analog wall clock reports the time, temperature, and humidity at a glance. This clock’s claim to fame is its precision time-keeping and the fact that it never needs to be set. A built-in antenna system receives signals from the WWVB radio transmitter in Fort Collins, Colorado, which is in turn regulated by the atomic clock. Once you install the battery and choose one of four U.S. time zones, the clock automatically sets to the accurate time in hours, minutes, and secods, and continues to adjust itself six times daily. This low-maintenance clock even automatically adjusts for daylight savings time, so you never need to remember to spring ahead or fall back. As an additional perk, the clock features in the lower left area of the face a hygrometer that measures the percentage of relative humidity in the air. The lower right has an analog thermometer that reports the temperature in both Celsius and Fahrenheit. This radio-controlled clock is covered by a 1-year warranty and runs on one AA battery (not included). --Cristina Vaamonde