Extreme high definition and clean, powerful bass combined in a premium universal-fit helmet speaker. We updated our popular HDS10 speakers with the incredible new HDX coated drivers for unmatched audio quality. The 3.5mm jack allows use with popular com systems, and we include a 3' break-away extension cable for use with external devices.Premium HDX coated 40mm driversGold-plated 3.5mm jack4.5" speaker to jack, plus 3' extension cableUniversal fit for most helmets122dB/m +/- 3dB sensitivityImpedance 32ohmsSee also HDX Speakers(#111045)Compatibility with UCLEAR MOTION Series requires adapter (#111044)Compatible with any audio device with 3.5mm jack outputVisit ucleardigital.com for tech and warranty support