This Marine Boat Car Speakers features a 150 Watt Max each pair, Poly injection cone material, 4 ohm impedance and comes with a plastic grills.  The Pyle PLMRMP4A is a marine-ready, four-channel power amplifier pushing up to 800 watts, a waterproof poly bag, and a waterproof stereo 3.5mm-to-RCA adaptor for plugging in virtually any audio source, including your iPod or other MP3 player. The included wired volume control easily mounts to your vehicle&#x27;s dashboard