Challenger model. Digital alarm clock with patent pending Set & Forget technology will automatically display the correct time from the moment you plug it in or install the batteries. The clock will continue to display the correct time even after power outages. The clock will also automatically spring forward and fall back when the daylight saving time switch occurs twice a year, no signals required. Alarm with .6" LED display, snooze, and battery backup. Requires 2 AA batteries (not included). 2.125" x 4.5" W. x 3.25" D. Black.