Super Stereo Base Sound with HF Sound on Dynamic Transducer. It has a Crystal and clear sound and comfortable to wear moreover, it has a good Durability. This earpiece is Compatible with All smart phones such as oppo, vivo, huawei. It won’t create burden onto your ears. However. it has less weight which gives your ear a bit of relaxation and comfortableness. It Doesn’t have a good or attractive packaging but wonderful in use.