1. The application is an APP tool suitable for operating PARD devices. After connecting to the device's WiFi hotspot, it is more convenient to remotely control the PARD device, play in real-time, and have a wider viewing range. It also has recording and photography functions. 2. Apply alternative device button operations to easily achieve live streaming and setup of PARD devices 3. The application can access recorded videos and photos stored on the device's SD card. The videos and photos can be downloaded and played and browsed on the local interface of the application.