A great upgrade from the more basic auto code scanner tool. The major function is working on vehicle engine system.   Features: I/M eeadiness is used to check the operations of the emission system.  Displays live O2 sensor test data and very fast reads live time data.  On-board monitor displays test result for emission-related.  Component test allows initiating a leak test for the vehicle's EVAP system.  Record data function allows recording pehicle modules' parameter identification (PID) data to help diagnose intermittent problem.  Vehicle information-displays the vehicle identification number, calibration ID and calibration verification number.   OBD II Functions: Read codes.  Erase codes.  Live date.  View freeze frame.  I/M readiness.  02 monitor test.  On-board monitor test.  Component test.  Vehicle info.  Modules present.  Unit of measure.   Specifications: Material: ABS;  Color: red, black (optional);  Supply voltage(VDD): 12V;  Work temperature range: -60 ~ +60℃;  Support language: English, French, German, Dutch, Spanish.  Support protocol: ISO 9141, KWP2000，SAE J1850，CAN ，J1850 VPW, J1850 PWM.  Support system: XP, WIN7, WIN8, WIN10.  Item size: 12.7 * 7.8 * 2cm / 5 * 3.1 * 0.8in;  Item weight: 336g / 11.9oz;  Package size: 18.3 * 15.2 * 5.3cm / 7.2 * 6 * 2.1in;  Package weight: 394g / 13.9oz;   Package List: 1 * Automobile Engine Malfunction Diagnostic Instrument;  1 * OBD2 Vehicle Code Reader;  1 * USB Cable;  1 * User Manual;  1 * Protective Nylon case