The evil Helmet Pig is made for iPod/iPhone with a dock that allows the speaker to be used with iPods and iPhones using the 30-pin dock connector. Fills medium sized rooms well and used only a handful of times. Selling because I don't use it anymore, but works perfectly. Compatible with any device using a standard headphone plug. - 30W speaker with bass control. - Works with any music player/Smartphone/tablet with a 3.5mm headphone jack. - Subwoofer for big bass. - 30-pin Dock connector for iPhone/iPod.