Bluetooth - Bluetooth Audio Streaming lets you play and control music and apps like Spotify / Pandora wirelessly via a smartphone or MP3 player Amplified - The speakers and tweeters are powered by a high-performance built-In class A/B amplifier Weatherproof - The BTB6 has been outfitted with the latest weatherproofing techniques for protection against the elements. It has an IPX5 rating Easy Installation - Power up in just seconds by plugging in the power accessory extension adaptor that is hooked up to your battery Auxiliary Input - 3.5 mm aux-in compatible with audio output of iPod / iPhone, smartphones and MP3 players Contents - Heavy duty mounting straps, Nylon zip straps, power accessory extension adaptor, user’s manual Sound Storm Laboratories provides a powerful 3-year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality