The Arm Of This Digital Clock Can Be Rotated 180 Degrees To Obtain The Best Positioning, And The Appropriate Distance Of The Wall Or Ceiling Is 1.64-11.4 Feet (0.5-3 Meters) To Obtain Fine And Smooth Time Graphics. The Edges Of The Projected Numbers Are Very Sharp And Sharp Without Having To Fiddle With Some Of The Other Focus Adjustments On The Projection Clock.--- Curved Screen 3.4 X 1.7 Inches (About 8.6 X 4.3Cm) Screen With Large Numbers Can Be Easily Read Even In The Dark, Even If You Are Not Awake Or Do Not Have Glasses. 3 Adjustable Levels, You Can Adjust It To A Level Readable During The Day, Unobtrusive At Night. It Can Individually Adjust The Brightness Of The Face Display And The Projection Display.--- The Curved Screen Imitates The Curvature Of Your Eyes For A More Comfortable Viewing Experience While Also Improving Your Health. Research Gate Reports That A Harvard Medical School Study Found That Curved Screens Are Better At Reducing Eye Strain And Blurry Vision, And Improving Attention.--- This Special Bedroom Clock Is Equipped With A Gradual Buzzer Volume, The Sound Will Become Louder And Faster, Suitable For Those Who Are Not Used To Sudden Loud Sleepers. Press The Big Snooze Button At The Top And You Can Get An Extra Precious 9 Minutes Of Sleep Until The Next Cycle Of This Alarm Clock.--- This Digital Alarm Clock Includes A 5V / 1A Usb Output Interface, Allowing You To Charge Your Mobile Phone Or Other Mobile Devices When The Clock Occupies The Socket, Which Is Very Beneficial To The Health Of The Mobile Phone Battery.-- This Digital Clock Has Large Control Buttons, Arranged Along The Top Of The Housing, Clearly Marked With Easy-To-Understand Icons. So It's Easy To Reach And Use Without Changing All The Other Settings. Suitable For Children, The Elderly Or The Elderly.-The Package Contains An Ac Adapter (Ac100-240V,50/60Hz) To Power The Digital Clock. When The Power Is Unexpectedly Turned Off, The Built-In Button Battery (Cr2032) Can Automatically Save Time And Alarm Setting (Time Will Not Be Displayed, Alarm Will Not Be Turned Off), And There Is No Need To Reset Again When The Power Is Turned On.-This Digital Clock Is Ideal For Showing Your Care And An Unusual Creative Surprise. The Perfect Gift For Everyone, Young And Old, Boys Or Girls. Also Suitable For Birthday, Christmas, New Year, Thanksgiving, Valentine's Day, Father's Day, Mother's Day And Any Other Holiday.