Sennheiser CX 215 is an earphone launched in 2011. Compared with the mainstream black and white style of Sennheiser, the color of this headset is more vivid, with five different styles of colors: red, copper, blue, orange and green. This earphone uses a plastic shell, and the shape of the earplug body is designed to fit the fingers, which is mainly for the convenience of adjustment and comfort, while providing users with