http://www.homeshop18.com/soundmagic-pl ... /cid:3230/ coupon Code: GCCUPA85P5E5 Technical Specification: * Unit:9mmNeodymiumMagnet * Sensitivity:100±3dBat1KHz/mW * Frequencyrange:20~22000Hz * Compatible with iPod/iPhone and other portable MP3 player devices. * Sound stage comprehensive, position precise. * Natural and pure tone reproduction. * True response results in more details. Noise isolation near -20dB.