comfortable headsets 1,high sound effect 2,factory price eardphone 3,OEM/ODM 4,:iso:9001:2008,rohs.fcca icti comfortable headsets specification: headphones: headphone&headset , computer headphone,headset,audio headset,super bass headphone,fashion headphones packaging earphonest.beats earphones,wireless headphone. wired headphone MaterialABS PVC Driver UnitΦ70mmImpedance32 ΩSensitivity115±2dB ...