I was expecting more from these Earbuds due to the high cost and description. These were more your average off the shelf quality earbuds. They were comfortable for the time I wore them and fit good. The ear tips are made of a soft squishy silicone type material. This is a 3.5mm jack which is compatible with most devices. I used this with my MP3 Player and my Laptop. I found the sound quality average. If your looking for superb sound this won't deliver that.