1 mp3 earplug and earphones; 2 housings in two kinds of color design; 3 for mp3,Ipod,pc,cd and so on. Technical Specifications:Driver Unit:10mm; Impedance:32ohms; Sensitivity:100dB+/-3bB; Max.Input Power:5mw; Frequency Response:20Hz-20KHz; Cord Length:1.2m+/-10%; Audio Jack:3.5mm, stereo.Unique Products Features:1. mp3 earplug and earphones;2. crystal clear, stereo sound;3. fashionable style;4. ...