The Mobile Theater MT-20 delivers surround sound effect with its 2.1 channel design for mobile device users to enjoy movies as if they were in theater. This ECO-friendly rechargeable MT-20 can deliver users 10 hours of movie watching experience. With a single button, users can switch to play clean and clear sound of music when not playing movies. Besides Bluetooth and 3.5 mm Aux connection options, MT-20 has built-in SD-Card slot and player to play songs and music locally. This well-crafted and stylish device with a foldable handle presents a new look at portable sound equipment, and provides a greater value to all movie aficionados.