The greater middle button would be the multi-purpose button. It initiates Participate in/pause as well as other keep track of controls for video clips and tunes, solutions and finishes calls, and may also initiate voice instructions which include Siri or voice dial. If you merely want price range wired headphones https://bose---quietcomfort-35-wi83727.blogmazing.com/7068307/bose-quietcomfort-35-wireless-noise-cancelling-headphones-ii-fundamentals-explained