This Portable Mini Speaker for Apple iPhone, iPod & any MP3/MP4/MD Players is Award-winning compact capsule design with black matte finish. You can use two or more mini speakers together for stereo or just one for mono sound.
Give it a twist and the top portion expands, giving you extra air space which brings out the bass. You'd have to hear it to believe it. With built in lithium batteries, you can have hours and hours of listening.