Chaney / AcuRite Atomic Alarm Clock with Time/ Date/ Temperature sychronizes to the time signal from the US Atomic Clock at Fort Collins Colorado for split-second precision accuracy. The self-setting clock and calendar are radio controlled and adjust automatically for Daylight Saving Time (DST). The bold easy to read LCD screen displays time month / date day of week and indoor temperature. Display stands upright for tabletop use. One-year limited warranty.