BOSS (611UAB) Audio Single-Din Mech-Less Multimedia Player (no CD/DVD) - Bluetooth enabled BLUETOOTH: Answer calls with just one push of a button. Make calls and be hands-free with no distractions. No need to hold your phone ever again. You can also play and control your music and apps like Spotify / Pandora wirelessly MEDIA PAYBACK: Play music through your Bluetooth device or use the USB port. Digital media support includes MP3 and WMA file formats. Tune into the AM/FM radio stations for up to date music/news/sports and more AUXILIARY INPUT: This single din head unit is compatible with the audio output from smartphones as well as MP3 players. Even more ways to chill INPUTS: The USB port gives you the option to have a vast library of audio files at your fingertips. The auxiliary input is a convenient way to hook up to your MP3 player/device. Advanced Bluetooth supported profiles include A2DP, AVRCP and HFP OUTPUTS: Use the front & rear pre-amp outputs to hook up your speakers (front left/front right and rear left/rear right) POWER: You can get 50 watts x 4 Max power from the 611UAB to power your speakers. An amplifier is recommended to make sure your speakers are well powered WARRANTY: 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