The MM 550 Travel combines the advantages of high-end headphones and stereo-Bluetooth headsets. It offers excellent sound quality, ultimate comfort and intuitive operation via buttons on the right ear cup, e. g. call answering while listening to music by pressing one button or switchable SRS WOW HD™ Sound. Comfortable padding and sophisticated functionality offer maximum comfort while traveling and need less space by the folding technique. The closed design avoids music comes to the outside and also background noise to the inside. Furthermore, it provides the active NoiseGard™ noise compensation for dreamlike quietness.