The audio system is a Carrozzeria DEH-5600, with a new audio unit, a DC-DC converter (15A), and a harness. Features Bluetooth, CD, AUX, USB, AM, and Wide FM (76.0MHz～99.0MHz). Hands-free calling is possible and compatible with Android smartphones and iPhones. It comes with a remote control and can be linked with smartphone navigation, read aloud text messages from LINE, etc. You can also download a dedicated app to control music playback and other functions from your smartphone. It has illumination control, so when you turn on the lights, the audio's LCD screen will dim slightly, making it very convenient for nighttime use! It is compatible with both original 2-speaker and 4-speaker vehicles, and operates with the key ACC and turns off with the key OFF. It supports backup power, so the clock and memory settings will be retained even when the key is removed. I have actually installed the same product in a truck and compared it to the original audio system, and the sound quality and performance are vastly different! The harness uses a 14-pin connector compatible with Hino, Fuso, ISUZU, and UD trucks manufactured after 2001. Installation is possible if your vehicle is one of these models, but please check the shape of the connector before bidding. We are not responsible for any direct or indirect damages incurred during or after installation. Please use the product at your own risk. We also offer navigation systems and audio kits without the audio unit, with four types available: 18-pin 20A, 18-pin 15A, 14-pin 20A, and 14-pin 15A! DC-DC converter kit Truck audio Truck navigation Easy installation