1. CLEAR CHECK ENGINE LIGHT - This Pro code reader will help you save money and accurately diagnose check engine light problem. Very easy to use. 2. EASY FITMENT - The majority of cars the past 2 decades are fitted with an OBD2 diagnostic port, simply find the port and plug the Pro in. 3. FIT AND FORGET - It really is possible to fit and forget beacuse it's Mini size and unique power saving functionality that protects your battery 4. WORKS WITH HUNDREDS OF APPS - The Pro Bluetooth Low Energy device works with the most popular OBD apps. Please find download instruction for Android device in product description. Read diagnostic trouble codes, both generic and manufacturer-specific, and display their meaning. (over 3000 generic code definitions in the database). Clear trouble codes and turn off the ("Check Engine" light) Engine RPM Calculated Load Value Coolant Temperature Fuel System Status Vehicle Speed Short Term Fuel Trim Long Term Fuel Trim Intake Manifold Pressure Timing Advance Intake Air Temperature Air Flow Rate Absolute Throttle Position Oxygen sensor voltages/associated short term fuel trims Fuel System status OBD-II protocols supported: 9141, KWP2000,SAE J1850, CAN ,J1850 VPW,J1850 PWM Supply Voltage: 11.5V-15V Supply Current: Less than 200Ma Standby Current: Operating Temperature: -40--85 Operating Humidity: 5%--95%RH Non-Dewfall The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:B:Black Material:plastic Package Contents: 1x Car fault diagnosis instrument Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.