Not sure why anyone would give this a negative review. I found that its best to roll them super tight, place them in your ear and then wiggle the top of your ear back-and-forth with your hand until it fully expands. These upgraded the sound of the M20s, are super comfortable even when wearing glasses, and look super rad. Complaints from others when on a callI use the earbuds predominantly for two purposes. Es gibt in der Grösse nur einen Dänen und einen Briten, klanglich in seiner Nähe, aber auch preislich. The supplied disk though installed well and if I had a need to set the dpi and such I feel sure I would understand how to do it. It came with USB but USB is detachable. Again, being destitute and reserving hitching for weekends, I had to walk two miles everyday in the blistering sun in a nice shirt and chinos. These hurt my feel but also the top part that goes around the ankle is not adjustable. I use mine primarily for outdoors activities due to its portability and it sounds great outside.