Looking for something simple that's simple to use? Look no further: the RCD20A1 is a streamlined alarm clock that offers snooze, a simple interface, night light, and No Worry battery back-up that lets you rest easy too. Features 7' LED display for easy visibility Large full-width snooze button and separate Night Light on/off button Optional battery operation offers protection against power outages Power Source: AC power adapter (backup battery for time keeping in power outage) Wireless Information: FM Radio