Foldable Speakers - Perfect for traveling Creative design-it-yourself product. Artwork is printed all around speakers surface. High Performance Speakers for Crisp Clear Audio No power supply or battery used - save energy and protect the environment. Compatible with all MP3 players, PMP players, computers, some brands of mobile phones, and any devices with 3.5mm audio frequency plug. 2 speakers packaged in Outer box with matching artwork design. Outer box: 6 5/16" x 6 5/16" x 1 3/4"