1.Cake speaker for apple iphone, ipad,ipod 2.No power needed 3.Connect to PC,MP3,MP4,MD,CD,DVD player, mobile ... more nice3.No power or batteries required, simply plug the speaker into your player4.Connect to laptop,PC,Mobile Phone,Ipod ... the sounds you love anywhere6.Compatible with any audio electric player that uses a headphone jack7. Special Design like a cake ...