... 2.No power needed 3.Connect to PC,MP3,MP4,MD,CD,DVD player, mobile phone,etc Features: 1.cup cake ... anywhere6.Compatible with any audio electric player that uses a headphone jack7. Special Design like a cakeSpecifications: output power 2wfrequency response ... Mini Speaker for apple iphone,ipad,ipod.PC,MP3,MP4,MD,CD,DVD player, mobile phone