NEW Dementia Clock 7" X- Large Display for Seniors Digital Day Clock-10 LanguagesDisplays the day of weekWhether its day or nightThe time in large lettersMonth- Day- YearEasy set-upAuto Night Dimmer8 Alarm OptionsON/OFF MemoryWall Mountable10 LanguagesNever been opened so I don't know what power it uses. Whether its plug in or batteries.