Earphone, Robiear 3.5mm Super Bass Stereo In-Ear Earphone Headphone Headset (Black ) Material: Aluminum alloy This product is suitable for MID / Smart MP3/MP4/CD / mobile phones / radios and other related products with the output of the Audio class Lightweight and comfortable. Use the sound isolating technology. Enables you to carry on conversations while you continue to do other things.