About this item Take the club with you - Legendary Sennheiser sound featuring massive bass, smooth midrange and extended treble..Connectivity Technology: Wired Tough companion - Constructed using premium extra rugged parts like stainless steel hinges and aluminum sliders for reliability and durability. Stay connected - control your music and calls (includes detachable cable with 3-button remote control and integrated microphone for Apple iOS devices) Easy to store and bring along - foldable design makes them easy to collapse and store in the supplied soft pouch. Peace of mind - 2-years international warranty when purchased from an Authorized Sennheiser dealer. NOTE: Detachable cable must be inserted into headphone until it "clicks" and twisted clockwise (to the right) to lock the cable in place