1. The scanner can scan the code clearly and quickly, very easy to use, even beginners can use this machine to read error code.2. Help you find out where the problem is and possibly solve it by yourself. Not only does it save time and money, it also allows you to relax during driving.3. OBD2 diagnostic scanner, able to read and clear engine fault codes; view frozen data, view vehicle information; instantly obtain the realtime status of the vehicle without going to a car repair shop.4. The portable size, nonslip surface and long diagnostic cable head allow professional diagnosis inside or outside the vehicle.5. With large LCD screen and four buttons, easy to use and directly indicate the test results. It doesn't need any batteries, you can get power from the vehicle after connecting.