Pyle PLMR113 Marine AM/FM/CD/MP3 Receiver Package offers a USB port and SD card slot for external audio input. AM/FM-MPX PPL tuning receiver. Programmable CD player features bit D/A converter, 8x oversampling, anti-skip, and auxiliary input. 30-station memory. LCD display. Loudness/mute. 4 x 25 watt output. Measures 7"W x 2"H x 7"D. Pyle PLMR113 Receiver Package includes wireless remote control and four 6.5" dual cone waterproof speakers with polypropylene cone and molded grille.