The SE102K earphones come with an in-ear design and use exclusive Sound Isolating technology to ensure the music you listen to sounds just like the original recording. The SE102 reduce background noise by up to 93% meaning you won't ever be disturbed when listening to your favourite track they also have a handy sound control feature so you can crank up the volume and not burst your eardrums. Designed for use with your MP3 player portable DVD player HiFi system or games console the SE 102 will bring your music to life! The SE102's speakers are constructed with studio-grade components producing exceptional audio clarity. Because every ear is different SE102 earphones come with three pairs (small medium large) of flex sleeves to ensure a personalized fit. The soft flexible sleeves gently contour the inside of the ear for a comfortable secure fit. The SE102's cables pass behind the ear ? out of sight and out of the way ? to provide a more comfortable discreet fit.