Features: 【Universall compatibility】 works with OBD 2 compliant vehicles and smart matching, automatic scanning connection, no need to manual select the brand model, more convenient to use, supporting 9 kinds of OBDII protocols such as J1850, ISO9141, ISO15765, ISO14230 and more, making it an essential diagnostic tool for any vehicle owner or mechanic. 【Real-time diagnosis & engine light reader】 it can quickly and accurately diagnose the engine, transmission problems of your vehicle with live data transmission, frame freeze analysis, and check engine light (CEL) reading and cleaning.