The Soundstorm BTB6 Sound System is featuers amplified 450 Watt Dual 6.5" speakers, weather proof 1" tweeters and a built in Class D amplifier. It includes a 3.5mm Aux input compatible with audio output of smartphones and MP3 players. Stream your favorite device wirelessly with the built in Bluetooth. Easily play apps such as Spotify or Pandora through these speakers. You smartphone is your controller on these so easily adjust the volume and settings with your phone. These speakers are rugged and can handle the bumpy ride of your powersports vehicle including but not limited to ATV, UTV, Snowmobile, Jet Ski, boat, or golf cart.