UNV10417 DELUXE 13 1/2" INDOOR/OUTDOOR ATOMIC CLOCK, 13.5" OVERALL DIAMETER, BLACK CASE, 1 AA (SOLD SEPARATELY)

A fully sealed, weather-resistant case and large, easy-to-read numerals on its face make this clock ideal for high-humidity, outdoor environments. As it maintains radio contact and automatically synchronizes with the National Bureau of Standards' atomic clock in Boulder, Colorado, it can be relied upon for up-to-the-minute accuracy and precision. For added convenience, it also automatically syncs up with Daylight Savings Time changes within the continental US time zones: Eastern (EST), Central (CST), Mountain (MST) & Pacific (PST).