pro : - good noise isolation . I find this best when work out at LA Fitness . this be where you appreciate not have to turn up the volume . - excellent in-line control with mic , better than Apple 's OEM in-ear headphone . Playback control do work for -lrb- middle button -rrb- pause , play , rewind , previous , forward , and volume up\/down -lrb- upper and lower button -rrb- . very tactile button but the play\/pause be a little bit depressed . Clicks also work on you desktop iTunes . Mic have very good voice quality for incoming and outgoing call , also better than Apple 's . - choice of three set of earplug to fit ear . the smallest pair fit my ear the most and the fit feel natural . con : - too much base , contribute to that be the nice fit to the point that you can not distinguish subtle arrangement in the music . I wish they balance the base with the vocal and other instrument to achieve clarity . - cheaply make : cheap plastic , cheap construction , in fact one of the earplug be now lose and I could not get a decent pair . I find similarly size earbud that fit the Sennheiser , but they do not replicate the original . I have this and Klipsch s5us and Sony dr-ex61ip . I like the Klipsch overall for balance in arrangement -- the base do not submerge everything , and the big inline control be a home run for I . the Sennheiser win in noise isolation -- I carry it on board airline cabin and they work really nice without have to up the volume but the tiny control make you guess all the time .