... 4. OEM highly welcome Metallic finish in-ear silicon plug earphone for MP3,IPAD,IPOD,PHONES1).Speaker Unit: 9mm2 ... Sensitivity: 104dB+/-3dB4).Frequency Response: 20Hz-20KHz5).Wire: 110cm6).Plug: Silicon7).Function: stereo super-bass, with volume controlPacking Information: ... inconceivable extensive sound stage imageMetallic finish in-ear silicon plug earphone for MP3,IPAD,IPOD,PHONES Metallic finish in ...