ARCTIC E461-BM In-Ear Stereo Headphones, Neodymium Magnet Drivers, Total Linearity - Silver Neodymium magnet drivers in hardened aluminum capsules deliver balanced & full-range frequency response Accurately reproduce original sound in total linearity; equally sensitive to all frequencies Convenient in-line control with integrated microphone allows smooth transition between music & phone calls Included 6 sets of soft silicone caps of different sizes and shapes for best fit and wearing comfort, keeping external noise out while minimizing fatigue Compatible with any device supporting standard 3.5mm TRRS plug