Earphones GranVela K1S High-End Dynamic In-Ear Headphones With Microphone HIFI Monitors DJ Studio Stereo Concert Music Earbuds Uses 3.5mm Plug For iPhone, Samsung, Android, More Phone MP3/MP4 Music Player Sophisticated technology, one piece metal casing to prevent accidental vibration and noise. The ultimate music experience. High Sound Reproduction With 9.7mm High Performance CCAW Drive Unit and Diaphragm Technology. Enhanced Bass with Powerful High-Performance Neodymium MagnetS Suitable For All Kinds of Music Style-Pop, Rock,Country and Others. Cable with high pureness core to ensure efficient transfer of signal and minimum interference. Low impedance, can be easily driven by portable gears.