sound quality. Full bass and mid range.
Delivery was pretty slow.
I got them about 2 weeks now and i will say i love them. They are comfortable, light, battery life about 4 hours, charge pretty fast and the best parts is the case is also a extended battery..... Sound is really good. Easy calls use. The Bluetooth distance range is about 30-50 feets if there no wall blocking between my phone and the ears bud. Overall is worth for the money! 4.5 stars for the product.