Bu this just fits in the right place andgive the quality to the point. They have great sound quality. Volume is excellent. I have 6 pair of these. They always become distorted or stop playing sound in the left earphone after a couple months of use. ? The description details how its driverless requiring no extra software. I have leeway ordered another pair and they are charging me a return fee to send them back I disliked their bulkiness and they sounded a bit "tinny". Update 5/16/2020:The headset often refuses to turn on, even after being charged. They were a little tight initially- but soon stretched ( I have big wide feet)They?re so pretty and you could almost wear them ?out?