This device is the CarlinKit wireless adapter (CarlinKit CCPA / Model CPC200-CCPA). Its primary function is to run Apple CarPlay and Android Auto wirelessly via Bluetooth and Wi-Fi, but with a special feature that differentiates it from other adapters. How the device works and its special feature: Most other CarlinKit adapters are made to connect to original car screens (dealer screens). However, this specific model (CCPA) is designed exclusively for aftermarket Android head units (Chinese and commercial screens). How it works? You install a special application for the device in APK format called AutoKit directly onto your Android car screen via a USB flash drive. After installing the app, you connect this unit to the car's USB port to broadcast a signal to your phone. Wireless Connection: Once you pair your phone (iPhone or Android) with the unit via Bluetooth for the first time, the device will automatically switch to broadcast CarPlay or Android Auto wirelessly every time you get in the car, without needing to connect your phone with a cable. Key Specifications and Features: Dual Support: Supports iPhones (iPhone 6 and above) and Android phones (Android 11 and above). Screen Mirroring (MirrorLink): Allows you to display your entire phone screen on the car screen to watch videos and apps. Voice and Steering Wheel Control: Supports voice commands (like Siri or Google Assistant) and control of music and calls via steering wheel buttons. Connection Speed: Features dual-band Wi-Fi technology (2.4Ghz + 5Ghz) to ensure a fast connection and smooth response without lag when navigating maps or playing audio. If you are having difficulty installing the special APK application on your car screen or want to confirm its compatibility with your phone, let me know the type of smartphone you are using, and I will assist you with the steps!