Brand : romaaModel : RH-32Compatible with iPhone and AndroidVolume Control ButtonsBright & Clear High PitchStrong BassComfortable wear feeling and listeningFrequency Response 20Hz ~ 20KHzConnector : 3.5mm audio jackDriver Unit : 10mmImpedance : 16 ohmSensitivity : 95dbCord Length: 1.3mMicrophone : -48+3DBThe headphone housing effectively isolate from outside noise interfaceThe noise suppression technology can be improving the quality of music