Features: In-ear headphones to fit better in the ear canal and form a relatively closed space Effectively reduce the interferences of external noise, while enhancing the bassed effect. The overall weight is light, which will not bring too much burden to the ear. Moreover, in-ear headphones relatively small in size, easy to carry. Fitting ear canal designing: ergonomically to closely fit shape of different users ear canals, providing comfortable wearing. It is not easy to get fatigue even after long time wearing, which is suitable for long time voice calls or to music on tablet PC or cellphones.