High Brightness Led Light Source Is Adopted For Clearer Night Projection The 180 ° Flexible Projection Swing Arm Can Adjust The Projection Angle At Will And Project The Time To The Ceiling Or Wall Upgrade Hd Led Large Screen 180 ° Wide-Angleviewing It Can Be Used As An Alarm Clock But Also Measure The Temperature Change Using Upgraded Silent Scanning Movement.The 180° Swivel Projector Projects Clear And Discreet Time On The Wall Or Ceiling And Ensures A Cool Look On Time Even When Lying On The Bed.The Digital Clock Ceiling Projector For Bedroom Has Been Changed To Soft Light, So You Will Not Be Disturbed When You Fall Asleep.This Alarm Clock Also Measures The Indoor Temperature So You Can Dress Appropriately To Avoid A Cold.Usb Alarm Clock For Bedroom Is The Best Gift For Your Kids Friends Parents Or Business Partners.Projectable Clock Is Powered By Usb Power Cord, And Can Be Powered By Wall Socket Or Mobile Power. The Simple Operation Of This Digital Clock Makes It Perfect For All Ages. And Memory Battery (Not Included) Has Time Memory Function.