Glow in Dark dialAfter just 10 minutes of sunlight exposure the glowinthedark feature stays active for 6 hours The dial remains clearly visible for the first 12 hours then gradually dims while maintaining enough illumination to help you locate the alarm clock in the dark no fumbling required Super Large Size Size 55 x 55 x 22runs on 1 AA Battery not included Alarm clock stands up at an angle high quality plastic square face with white dial black Arabic numerals good decoration for tabletop desk shelf bedrooms Also large size screen and clear bold digits to display time perfect alarm clock for elderly Completely Silent Super quiet concise design alarm clock without annoying tick tock sound ideal for those who need complete silence to fall asleep Snooze and Manual Light Snooze and light button locates on easytofind top place Hold button down for 5 minutes snooze or to light up the clock face on demand to see the dial momentarily in the darkness PRESS TO LIGHT NO autolight Gentle Wake Increasing Volume Classic beep alarm sounds designed to ascending four stages for gentle wake at first then ascend in volume with more and more hurried sounds which last for nearly 1 hour or stopsuspend when alarm is turned off or snooze bar is depressed