However, if you like fantastic sound quality, like great bass, when listening to for example, drum and bass music, then dont buy it. You know how in so many movies the music in the background is so loud you miss the dialogue, especially when people are whispering to each other on screen? These earphones keep you from missing so much of the plot. Take down bike, ride. A human needs 16 mm, about 1/2", hoops for earrings, at least I do! I?ve determined three main problems. Perfect fit, tru to size since they come in half size and very comfortable Then as I mostly use the small hooks to hang pictures but they did not come with enough small nails. No more having to worry about the tide going out and almost ripping the cleats off your water craft. 50BT instead. If I?m not careful, my bike could tip over on the drivetrain, which would be so heartbreaking!