The tweeters are mounted to the grilles, rather than to a pole piece, thus there is no chance of water leaking through the woofer cone. There are red, green, and blue LED's in the back of each tweeter casing to create a glow on the woofer cones. The LED's are controlled using the included RF remote, choose between 21 different static colors, or 21 different dynamic modes. Water-resistant rubber cushion adopted to prevent water intrusion of back side of the woofer. A 12 volt power supply is needed to turn the LED's on and a 3-amp fuse should be wired in-line (fuse not included). One of the speakers has an LED control module attached with an RF remote control receiver, to which the LED power and ground wires are connected. The included Link Cable B is routed to the other speaker to control its LED's. Water-resistant PP Cone (IPX5) , UV resistant woofer grille and cone