[Atomic Clock with Backlight] Never Need Setting, a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast, it will always be accurate to within one second as it receives daily WWVB updates. Three levels (OFF-LOW-HIGH) backlight helps you to know what time it is without turning the light on late at night. [Large Digital Wall Clock] 14 inches large display with 4.3 inches numbers make this digital wall clock easy to read and it's visible around the entire room, friendly to the elderly and the visually impaired. [Digital Wall Clock Battery Operated] The clock is supported by four AA battery (not included). No wires make it can be placed anywhere; and the low battery symbol reminds you to replace the battery in time to avoid getting the wrong time due to low power. [Digital Clock with Date and Day of the Week] This digital wall clock with backlight not only does it give you the time, you can also get the day, date and current indoor temp at just