mobile speaker 1,2.1 mutimedia speaker 2,OEM&ODM service 3,USB/SD 4,Pefect for MP3,TV,DVDmore mobile speaker mini speaker, computer speaker, Selling point:Extendable bass chamber: open it to get better bass resonance, or close it to get better portability.Hamburger shape: music hamburger, a great feast to your ears and eyes, but just listen, don’t eat it!Delicate appearance: refined superfacial ...