Alarm clock with eye-catching design offers a reliable timekeeper for travel or your office. Radio-controlled, battery-operated clock modifies setting each day to that of the atomic clock, accurate to one second per million years. Clock automatically adjusts to Daylight Saving Time. Green luminant PC dial and snooze/light function help you make out numbers on the green face in dim light. Clock also features a step second hand, silver ABS casing and black printed PMMA front lens. Clock runs on one AA battery (sold separately)..