It is a new kind of promotional gift . We  can provide 5 colors for  you while print any logos you need . It is very popular as a decoration in cars or houses . It doesnot need any outside electricity . With the solar panel inside it can absorb sunshinging energy and then go up and down itself . Very lovely cheap electronics gift !!!.  If you need to see the vedio of it please visit http://u.youku.com/user_show/uid_tiger860501. The size of one pc is 12.5*10.5*5.5cm .