Whole package includes 4 pieces of VPB earphones Compatible with most electronic devices having 3.5mm audio Length is about 3.6 feet or 1.1 meter, so you can leave your device in pocket Make and receive calls with in line mic and call button Earphone has bass and heavy tone. We attach great importance to the quality of sound WARNING：CHOKING HAZARD Small parts.Not for children under 3yrs.