I've been on the hunt for the perfect (low cost) pair of Bluetooth earphones. After trying several pair, I finally found my pair!! The biggest problem with Bluetooth earphones is that for me they don't get loud enough. It takes power to drive them and with a tiny battery, that's a tough thing to do. This was my 3rd pair, and while I can nitpick, at the end of the day, these are an amazing pair of earbuds and for the price, THEY CAN NOT BE BEAT. The pairing was simple and I was on my way. I instantly turned them all the way up.. and they were loud. Louder than any pair I've tried. They do block out a majority of the outside noise which is nice. I've listened to a vast variety of music, and the sound on these is amazing. Bass could be a little harder, highs and mids are perfectly balanced without being too harsh. I was so happy with these I purchased the 2nd pair. So glad I got these.