This precise clock from Lacrosse Technology (the original) tunes in to the radio signal emitted by the U.S. Atomic Clock in Colorado, and resets itself daily to the exact hour, minute, and second. Imagine a clock that is accurate to the exact second, and automatically adjusts to daylight savings time. The same technology used to govern ship movements, space flight, radio and television stations is now available to help consumers manage meetings, appointments, and family schedules. Dimensions 12" Diameter

The Lacrosse Technology wall clocks are the easiest to use. You just insert a AA battery and press your time zone. The clock then takes care of the rest!

• Automatically sets itself to the US Atomic Clock, the world's most accurate clock
• Shows the official US time in hours, minutes and seconds
• 12" Brushed Metal Frame
• Accurate to the second per one million years
• Automatically adjusts for daylight savings time
• Easy single push button time zone selection (E,C,M,P)
• Optional daylight savings defeat button (for AZ and IN)
• Runs on one AA battery (not included)
• 2-3 Day USPS Priority Shipping ($5.95)
• One Year Warranty

Specifications:

• Simple Operation: Insert One “AA” Alkaline Battery
• After signal is received, press Time Zone button to set
• Four Time Zone Settings
• Daylight Saving Time Option On/Off
• Manual Reset Button
  
• Power requirements:
  Clock: One “AA” Alkaline Battery