Pros Stylish, easy to use, good sound
Cons Battery degrades quickly
Summary This is a great headset, but the battery degrades quickly and after about 9 months of use I barely get a day's use out of it. We bought 4 of these and they all show the same battery deterioration, which now only allows for about 30 mins of talk time. They were purchased outside of the US, so SE won't honor the warranty!
Pros Fits in ear, no hassle bluetooth pairing, good talk time.
Cons Several people said I sounded a bit "muffled" when speaking, but I have had many conversations using this headset with only a few complaints.
Summary I have UK, unlocked K750i on Cingular network, and this product works great for me, but it RESTS in the ear... it is not a tight fit, no jogging or heavy activity with this headet in use.