Dual Electronics Marine Digital Media Receiver w/ 6.5" Speakers, Black. Features Bluetooth for hands-free calling and audio streaming. Includes a port for USB and a 3.5mm headphone jack. The top and sides of chassis are wrapped in a layer of PET (polyethylene) for protection from the elements. Protective film applied to all interior circuit boards to additionally guard against dust, condensation and corrosion. Includes two speakers and a 40" AM/FM antenna.