In Ear Earphones Speaker Dimension:10mm Frequency Response:20Hz~20,000Hz Rated power:15mW Sensitiviy :105dB S.P.L at 1KHz In Ear Earphones,ear buds,mp3 earphone,mp4 earphones,in-ear headphones,ear buds,in-ear headphones,mp3 earbuds,mp4 earphone,airline earphone,computer earphones,fashion earphones,promotional earphones,stereo earphones,wired earphones,mobile phone earphones,microphone ...