Seiko’s® radio-controlled R-Wave clock is guaranteed to keep time to within one second in one million years. Features automatic calendar, thermometer and alarm, and big, clear LCD display. Automatically adjusts for Daylight Savings Time. The stunning silver metallic case gives the R-Wave a sophisticated style that’s just right for your bedroom, study or office. Uses 2 “AA” batteries (included). 10¼"L x 7¾"H x 2¼"D.