The stylish z 1 has 360 qube stereo noise isolating earphones with flex 39anti39 tangle cord system so you39ll only hear the music you want to enjoy 35mm plug with ni plate 10mm speaker with bass enhancement qube noise isolating technology flex anti tangle cord system sound sensitivity 105db 3bd channel balance 3bd at 1000hz rated input 3mw max input 10mw impedance 18 ohms 15 ce and rohs approved cable length 125 m case col