SkyNature LCD Digital Alarm Clock Large Display with Time Date and Temperature (White) Multifunction: LCD Clock with time (12/24), Calendar (MM/DD), Temperature(/), Alarm Status (ON/OFF) Large display with Arabic numbers: Time can be read within 33 feet in the day time or 16 feet at night(with nightlight sensor). Gentle Wake Dementia Clocks:Gradually ascending "beeping" alarm and Snooze repeats every 5 minutes if press the snooze button, fits for senior, office workers and heavy sleeper Portable Mini Size -- 4.5" x 2", you can bring it with you whenever you go to a cafe or cyber bar. Especially fits for traveling. Shell Material: Plastic. Powered by 3 AAA batteries.