In-ear headphones to fit better in the ear canal and form a relatively closed space 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 Effectively reduce the interferences of external noise, while enhancing the bassed effect Fitting ear canal designing: ergonomically to 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