HDX 47mm Helmet Speaker Set for Motion Series (Speakers Only/Microphones not included) For music lovers who demand only the best, HDX speakers powerful coated drivers are tuned to deliver true fidelity and tight powerful bass. You don't buy HDX to fit your helmet, you buy your helmet to fit HDX- that's how good they are. For the best performance, use with UCLEAR Bluetooth controllers with CLEARLink mobile app and graphic EQ.
