MCD51B has Conformal Coated printed circuit boards, componets and Faceplate which make this radio ideal for marine and UTV applications. Features Digital AM/FM Tuner with pre-set memory stations, theft deterrent detachable faceplate, Bluetooth V2.0 hands-free calling from a Smart Phone, 2-band Equalizer & audio staging controls, A2DP MP3 audio playback from enabled devices, playback from 32GB USB of MP3 & WMA, CD, CDR, CDRW, 2 channel RCA audio inputs for using personal media devices, 4 channel front & rear Pre-amp RCA outputs to amplifiers, 52w x 4 MOSFET speaker outputs, custom & Pre-set Equalizer settings, audio staging controls, 12/24 hour Digital clock. Comes with Remote Control & Faceplate Carry Case. Fits into most marine waterproof enclosures.