... In-Ear Headphones/Earphones For iPhone 4 4S 5/iPod/PC,In-Ear 3.5mm Earbud Earphone Headset,In-Ear Earphone,In-Ear Headphones New In-Ear Headphones/Earphones For iPhone 4 4S ... MP3 or MP4 player with this quality headset fits for PDA, PSP, Laptop, MP3, MP4, CD player ... any other devices with a 3.5mm audio earphone output jack Specifications:Type:In-earImpedance: 32ohmsSensitivity: 106dbFrequency Response ...