1.Cake speaker for apple iphone, ipad,ipod 2.No power needed 3.Connect to PC,MP3,MP4, ... phone,etc Features: 1.cup cake stereo speaker2.Make office, home or study life more nice3.No power or batteries required ... speaker into your player4.Connect to laptop,PC,Mobile Phone,Ipod,Iphone,MP3&MP4 Players and other digital products with audio ...