Features: The product which is Mobile Accessory features the precision chip-control system.Can easily operate the whole system with only one smart button to show various graphic designs that stay magically in the air,so clear and bright.Can memorize different designs,and functions to show single design,or circulated designs,or cartoon,Chinese, English,various countries' writing,which is available as optional.The design can be shown in the air clearly at different sizes and effects while operating it in a changeable speed,rhythm and mode.Importance:can use scratching and writing articles through computer to edit and revise writing,design or other contents.No necessary to rely on reflection objects like wall as projection screen.Exquisite ,can replace the picture in the back. With the same fuction,***There are other items( keychain ,handing rope,magical stick and so on)for your choice.Need details,pls contact me.