Not only can you enjoy music individually, but you can also easily play the sound source you need in a variety of spaces, such as events or demonstrations, meetings and presentations. The smart and chic design is perfect for office occasions. No batteries needed, easy to carry. Easy to playback by simply connecting to MP3 players, portable devices, Nintendo DS, PSP, PC, radio, CD players, and other audio devices with a 3.5mm headphone (earphone) output port. Even if you dont have an audio device, you can use a microSD card with an mp3 to play it with the main unit.