The Pyle PLMCA61 Weatherproof Speaker System is what you need to listen to high-quality auto on your motorcycle, ATV, or snowmobile. It comes with two 2.25" bullet-style 50-watt weatherproof speakers and a 600-watt amplifier. Plug your MP3 player or iPod into the included 3.5mm jack to listen to your favorite music on this stylish system. Charge your MP3 player with the satellite USB plug (USB for charging only). Take total control of your sound with the included volume, treble and bass digital controls. Easy handlebar mounting brackets and accessories are included to make installation a quick process.