... 1.Cake speaker for apple iphone, ipad,ipod 2.No power needed 3.Connect to PC,MP3,MP4,MD,CD,DVD player, mobile phone,etc ... can enjoys the sounds you love anywhere6.Compatible with any audio electric player that uses a headphone jack7. Special Design like a ... response 200Hz-5kHzimpedance 8Ωresponse 97dBPackage: Cake Mini Speaker for apple iphone,ipad,ipod.PC,MP3,MP4,MD,CD,DVD player, mobile phone