1. Mini size speaker with amplifier ; 2. Enjoy quality music with compact design ; 3. Surprising audio effect by employing Latest IC; 4. Frame specially designed for various ipod MP3 players ,good for various MP3 brands ; 5. Suitable for universal adaptor (included )or alkalize batteries it can last about 10 hours ; 6. Foldable design is perfect for traveling ; 7. Carrying -Pack is included .