Philips S1/28 Fidelio In-Ear Headsets - Black (Discontinued  by Manufacturer) High-powered 13.5mm neodymium drivers for exceptional sound Ultra-soft silicone tips in 3 sizes for a custom, snug fit Switch between music and calls with in-line control and mic Ergonomic earphones fit perfectly while dispersing pressure Durable flat cable keeps your headphones tangle free