KEF M100 Hi-Fi in-Ear Headphones - Titanium Grey In line with KEF's obsessive pursuit of ever-higher sonic resolution, the M100 hi-fi in-ear headphones deliver a full, crisp, and accurate response, with each instrument clearly differentiated. With 10mm neodymium drivers and a unique angled chamber engineered to minimize distortion, the listening experience offered by the KEF M100 retains the intensity of an artist's original live performance. The KEF M100's in-line microphone and play/pause functions are compatible with all Apple products, meaning less hassle and more listening. The KEF M100 was designed with comfort in mind. Each aluminum earbud is ergonomically angled for a snug, comfortable fit, and comes with different sized rubber eartips to best suit your needs. When you're done enjoying your KEF M100, you can comfortably slip it into its softshell case and safely store it in your pocket or bag.