For $10 bucks, I am very satisfied with this ear piece. A definite recommend BUY. When any light hits them, they have a nice sparkle! BATTERY: About 4h of music in one charge. I ordered green, thinking the color would be closer to (darker) Sage, but what I received is closer to Seafoam, a much lighter color. So far they are like walking on clouds and comfortable to wear without socks. Adults, I?d think twice. I suppose its pretty tough to to get a BT antenna working great from inside your ear despite what Hollywood shows you. The 8s are perfect and i hope to get another 18 years out of these! They insisted that they could not help me and that Amazon would have to contact them for the missing $0.