The split second accurate atomic time. Full range female voice time and date announcement, with smooth and natural sound quality. Radio controlled with automatic summer/winter (daylight saving) adjustment. Display time with running second, month, date, day-of-week, and alarm time. Hourly time announcement between 8AM to 10PM inclusively. (If not wanted, user can select to turn off the hourly announcement). Extra long 5 minute alarm sound, with beep tone and current time announcement. 5-minute snooze function. High and low announcement volume selection. The unit works on receiving the time radio signal. The time signal is generated by the US Atomic Clock which is located in Colorado. The friendly voice even guides you to set up. Easy to see LCD 1 3/4" x 3" - showing month, date and day of week. Uses 2 AA batteries (included).

Please note: The atomic function will not operate in Hawaii or Alaska. This item cannot communicate with the National Institute of Standards and Technology from either Hawaii or Alaska and therefore must always be set manually while in those states.