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X-431 Diagun IV is an slim evolutionary vehicle diagnostic tool. Featuring a quad-core 1.1GHz processor, and a 5.5 inch capacitive screen, X-431 Diagun IV delivers diagnostic functionality which helps to diagnose vehicle issues more efficiently. In addition, X-431 Diagun IV supports Wi-Fi connection, one-click update, diagnostic feedback and all kinds of service functions (including oil lamp reset etc).