Features:1.Extreme deep bass port2.Inner-ear headphones3.Appearance design breaking the tradition，cool shape，color publicity4.Plug is compatible with a variety of mobile devices5.HA - FX1X headset using carbon nano technology and technology of carbon fiber6.Includes hard caseSpecifications:Model: HA-FX1XStyle: In-earConnectors: 3.5mmPlug Type: InlineConnectivity Type: WiredUse: Portable Media PlayerPackage: YesColor: Pink，Blue，Red，Green，WhitePackage Include:1 x headphone1 x hard carrying case3 x silicon ear set (S/M/L)