Sunweb Headphone For Pc Mp3 3.5mm In-ear Earbud Earphone Yellow Package Content:1 x 3.5mm In Ear Earbud Headphone Universal 3.5mm In-ear Stereo Headset Frequency Response:20 Hz To 20KHz Can Be Use For All MP3/Mp4/CD/Tape Players With Standard 3.5mm Jack