testen . Was the easiest headphones to pair Ive ever had. I would not buy them again and would advise that if you choose to do so, you might get lucky but you should be aware that it is a crap shoot. The biggest problem with these (which cost me my 150$ galaxy buds live) is the fact that the case does not stay closed and before I realized that, they fell out and could no longer find them. I have gotten these pretty much four times. I?m no expert on gemstones but some clearly look like some sort of acrylic or glass. These seemed right on. Updated review: The 9/10 fit him perfectly! After wearing them about 2x they seem to have taken on the shape of my foot and ankle. The third issue is that of having two different cable lengths between the earbuds.