The Launch X431 GDS (Global Diagnostic System) is a high-end integrated diagnostic solution. You must ensure the unit features a Windows-based operating system for stable multitasking and a built-in Wi-Fi/Ethernet module for direct software updates. Key functions to verify include full system diagnosis (ECU coding, programming, and data stream analysis), integrated Scopebox, Sensorbox, and Batterybox support, and a high-resolution touchscreen display (typically 7-inch or larger) that is sunlight-readable for workshop environments.