Bose MIE2i mobile headsets have a specially engineered acoustic design that lets you experience better music with more realism and range. Its TriPort acoustic headphone structure reproduces tonally balanced audio, enabling you to listen to even the low notes in the music. These in-ear headphones" StayHear tips conform to your ears" shape and stay in place even during exercise and other activities. You can answer calls easily with a single touch of the answer or end button at the back of the microphone. These headphones offer effortless switching between answering calls and listening to music. Bose audio headphone cables are flexible and durable enough to withstand everyday use. Its 2 2.5-mm adapters are appropriate for a wide range of mobile phones. The included protective carrying case stores and protects these headsets during travel.