Logitech mm32 Portable Speaker System for Pod and other MP3 Players(Black) Compact speaker system with built-in cradle for "dockable" iPods Integrated cradle amplifies, charges, and syncs iPod while you listen Matching quad neodymium microdrivers produce crystal-clear sound Auxiliary input works with older iPods, MP3 players, and other devices Runs on 4 AA batteries (not included) or AC power; 2-year warranty