1.Cake speaker for apple iphone, ipad,ipod 2.No power needed 3. ... more nice3.No power or batteries required, simply plug the speaker into your player4.Connect to laptop,PC,Mobile Phone,Ipod ... : output power 2wfrequency response 200Hz-5kHzimpedance 8Ωresponse 97dBPackage: Cake Mini Speaker for apple iphone,ipad,ipod.PC,MP3,MP4,MD,CD ...