AM/FM/USB/SD/CD Receiver with 6.5" Speakers and Universal Gimbal Housing This robust CD receiver plus 6.5" speakers combo also includes a fully enclosed gimbal housing to further protect the electronics from harshmarine environments. The receiver features convenient front panel USB and 3.5mm auxiliary inputs, as well as an SD card input behind the faceplate. The fully-enclosed, universal gimbal housing accommodates most 1.0 DIN receivers. The transparent fold-down door with rubber seal and positive locking door mechanism guards the receiver against water splashes and the sun's harsh UV rays, preventing corrosion and UV damage. Easy to install, adjustable mounting mechanism.