Shure SE215's are a great first step into the world of sound isolation earphones with their single dynamic driver with deep bass performance in a discrete, durable design. Shure also included a gold-plated MMCX connector that has a snap-lock mechanism allowing 360 degree rotation for a comfortable fit. The SE215 kit comes with a variety of sleeves to block up to 37dB of outside noise so you can hear more of what you need. The secure over-ear-design ensures that your earphones stay in place with the cables strategically placed to maximise comfort.