Push To Talk – You can connect with your Smartphone’s assistant with a push of a button. Linked via Bluetooth to your phone. This unit Lets you access information, accept commands, and keep driving Bluetooth - Answer/make calls and be hands-free with no distractions. The built-in microphone picks up your voice and your car speakers let you hear the person on the other side. Play and control your music and apps like Spotify/Pandora wirelessly Inputs – USB, USB charging, Aux Outputs - Use the front, rear pre-amp outputs to hook up your speakers (front left / front right & rear left / rear right) 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