The E8i are the ideal companion for working out, biking o even hanging around in the city jungle. Listening to your favorite tunes or just using them to call your buddies. The E8i offers a great audio performance due to the material choice and its dual chamber system. For a powerful Bass the Bass!AMP technology grants by its name. Despite their size the E8i offer a great sound. Comfort is also a point in the E8i's conception. The integrated microphone and multipurpose key allow you to use different comfort functions without having to touch your phone at all.