Sharp Digital Alarm Clock, 3" Jumbo Red LED, Dual Alarm, Battery Backup

This alarm clock is compatible with 110V/120V power outlets. To power the clock, just plug in the power cord and you are good to go. Use 2 x AAA Batteries (Not Included) for back up in case of a power outage. During battery back up the screen goes blank, but alarm and time settings are retained, and the alarm will still sound