1. Built-in low power and high-quality speakers, completely replace the headset's feature that lets you enjoy the soothing music.The songs will not disturb the other people; 2. Can be easily connected to the MP3, MP4, CD, computer, etc. all kinds of audio players; 3. without any power source, just plug the product can be inserted into the player. 4.U-shape design is more concave and convex face of the Lateral;