I just purchased this bluetooth headset from amazon 2 days ago and I start to love it. First let me clear, this is a model more toward mid-low end on price scale,so you should not expect it to be like a $100+ fancy headset.But I will say, it is really worth the money that you are paying. I paired it with a Moto Razr and Sony Ericsson W810i, the voice quality is excellent on both incoming and outgoing. Volume maybe a little bit too low for some people though. It stayed tight and comfortably on my ear,but for people concerning about wheather it will stay stable or comfortable on your ear, I stongly recommand just ignore my opinion on those related issues...simply because the shapes of our ears are all different.. there is no point to listen to other people' s opinion. Borrow it from a friend or somewhere and try it on youself. This headset give you all the daily functions that you will expect on a headset, the range is about 20 feet,(you can still hear and talk in a further distance, but the quality drops). After all, I am satisfied with this headset.