" Bluetooth - Play and control music through your smartphone or MP3 player as well as apps like Spotify / Pandora, wirelessly Weatherproof - The MGR300B has been outfitted with the latest weatherproofing techniques such as PC board with conformal coating. It has an IPX5 water resistant / dustproof rating for protection against splashing water and dust Illuminated Controls - Let there be night! Navigate through the system with ease after the sun goes down with the backlit panel Inputs - The USB port provides a vast audio library. Charge USB compatible devices. The auxiliary input is compatible with audio output from smartphones and MP3 players Outputs – One pair of RCA Pre-Amp Specs - Dimensions: 3.73” x 4.53” x 4.53”, Weight: 1.34 lbs., Switchable US & EU Tuner Frequencies, 60 Watts × 4 Channels BOSS Audio Systems 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"