This product come from sound master sony. this speaker is really super and low price. I use this speaker within 3 years and its support me with its better sound quality and practicality. it has one usb port and one 3.5 mm jack port. when I enjoy with it high volume I fell super and like a movie theater. this speaker has 4 speaker and one woofer. the two speaker indicates left sound and other two indicate right sound while you watching movie you fell it better. its very suitable features is it has a remote controller and you can set up you playing mode and adjust you volume.Personally I already recommended my friends and they enjoying with it. thanks to SONY for this product.