The Clarion Marine CMD7 CD/USB Receiver is engineered to withstand water, salt, and fog for worry-free use in marine environments. Tested to IPX5 standards, the Clarion CMD7 Receiver is designed with humi-seal coated PCB, rubber gaskets, and integrated drainage channels to keep water out. The rear USB input allows complete key control of your iPod as well as playback of audio files stored on USB memory. Beat EQ provides 3 preset equalization patterns, plus customized level and range of bass, mid, and treble. The Clarion CMD7 is Sirius satellite direct connect ready. Magna Bass EX. Flip-down face. CD/MP3/WMA playback. 2-channel RCA audio aux inputs. 4-channel RCA output (front + rear/subwoofer). 45 watts x 4 output. Faceplate measures 7.75"W x 3.6"H. Chassis measures 7.1"W x 2"H x 6.6"D.