Modelsport ote20 materialmetal silica gel rubber plastic typein ear general usemobile phone cellphone functiondj with microphone monitoring hi fi noise cancelling sports gaming fm radio communicationwireless bluetooth connectorsusb speaker diameter125mm speaker sensitivitydb112db3db speaker frequency response20hz 20 000hz driver typemoving coil sound channel21 bluetooth versionv41 frequency20 22 operating rangem30m talk timehours12 production modee