Memorex ML310 Portable Speaker and Case

The Memorex ML310 Portable Speaker and Case zips around most MP3 players and smartphones so you can keep your player safe while listening to your favorite music. Its universal line-in jack lets you connect any music device with a 3.5mm headphone jack-from iPod, Zune and other MP3 players to Android, Windows and other smartphones. It features stereo speakers for high quality audio and external volume controls. It requires four AAA batteries.