Reader Professional 123 is a new generation of core diagnostic product for professional and individual users released by LAUNCH, a DIY diagnostic product whose development is based on DPU platform composed of chip DP431 and JV700 as core components which are independently developed and designed by LAUNCH. The main functions do not only include OBD / EOBD standard protocol diagnosis, but also cover professional diagnostic software for multiple models which can perform comprehensive diagnosis on four main ECU's (ENG\ABS\SRS\AT) of vehicle. Feature 1, OBD full diagnostic functions, 2, Multiple models (covers ten main stream models in Asia, America, etc.), 3, Four basic systems(ENG-TCM-ABS-SRS) 4, Basic diagnostic functions, including reading DTCs, clearing DTCs and reading data streams, 5, Rubber buttons/3.5" 320 x 480 lattice high-definition color LCD screen/ Large-capacity memory of 1G TF Card 6, Supports DLC location hints/ DTC help/ Data stream display in waveform/, Historical data record and playback 7, Supports multiple languages/ Buzzer alarm/ Clock and calendar/ Fast upgrading