BOSS Audio Systems MC420B 3 Inch Motorcycle Speakers and Amplifier Sound System  Class D Compact Amplifier, Weatherproof, Volume Control, ATV UTV Compatible, Hook Up To Stereo Max out your playlists while you ride the roads or the trails with the Boss Audio MC420B Chrome Weatherproof Motorcycle Sound System. Power up your music on your 12V Motorcycle, Scooter or ATV with the 600 Watt Max Power Amp and a pair of 3" Full Range Speakers. Hook your Smartphone or MP3 Player up to the Auxiliary Input. Bluetooth Audio Streaming lets you play your favorite music apps like Spotify and Pandora. Turn up the sound with the Wired Remote Volume Control. The MC420B features Weatherproof Speakers to provide protection against the elements. For high quality sound on the go, fire up the Boss Audio MC420B. Motorcycle Speaker System - Class D Compact Amplifier, 3 Inch Weatherproof Speakers, Volume Control, Great for ATVs, Motorcycles and All 12 Volt Vehicles The BOSS Audio Systems MC420B Weatherproof Sound System lets you take your music with you everywhere you go. Veer off into the wilderness or head into the mountains on your Motorcycle, Scooter or ATV with the Amplifier & two 3 inch Full Range Speakers. Hook your Smartphone or MP3 Player up to the Auxiliary Input or Stream via Bluetooth to play your music apps like Pandora and Spotify. A Wired Remote Volume Control amplifies the experience while providing protection against the elements.