... CE, RoHS, REACH,FCCOEM/ODMYesPatentHave patentProduct Functions:1.Support remote control of play/pause, next song/last song,volume up/volume ... in seconds and connects up to 10 meters away (in open spaces)MOST COMFORTABLE - Lightweight with built-in mic for hands ... x User GuideQ1.Are you a manufacturer?Yes,we are 10years oem manufacturer,our factory in shenzhen.Q2. What are the Guarantees/Warranties/ ...