Marine CD Receiver, Bluetooth, Positive Background Display, Front USB and AUX, SiriusXM Ready, Conformal Coated,KENWOOD Music Mix, Remote App Ready,(3)4Volt Pre-Outs. Kenwood designed their marine speakers to bring power and precision to your boat's sound system. Designed specifically for marine use, Kenwood KFC-1653MRB 6-1/2" speakers feature water-resistant cone woofers topped with 1" balanced dome tweeters. Feed them up to 50 watts of power, and they'll sound great whether you're out on the water or relaxing at the marina.