Pros: tiny size, great carry case, perfect for use with iphone
Cons: standard buds not a perfect fit
Bought these from an apple reseller store so probably paid over the odds. Sound really clear at the top end, little bit lacking in bass punch, although this is improved with better fitting buds. I find a medium Sennheiser but/tip a perfect fit, but with these, the medium bud is a little small and falls out easily, and the large is just too big. I went for the highly rated Comply Foam tips which were £15 for 3 pairs and are superb. They discolour with ear wax though :( . But the noise cancelling is great, really good in flight. They are basically an ear plug with a thin plastic tube thru the middle which fits snugly over the apple in-ear 'trumpet'.
Easily the best sounding in-ears i've heard, and better sounding and looking than my Sennheiser MM50 and CX150s. Better seperation and more clarity.