... speaker for apple iphone, ipad,ipod 2.No power needed 3.Connect to PC,MP3,MP4,MD,CD,DVD player, mobile phone,etc Features ... plug the speaker into your player4.Connect to laptop,PC,Mobile Phone,Ipod,Iphone,MP3&MP4 Players and other digital products with audio ... response 200Hz-5kHzimpedance 8Ωresponse 97dBPackage: Cake Mini Speaker for apple iphone,ipad,ipod.PC,MP3,MP4,MD,CD,DVD player, mobile phone