Obdok provide the new products LAUNCH X431 Creader VII,it supports whole system diagnose. Besides, it can support single model diagnose. What is the meaning? Such as your car is Benz, you can register your information on official launch website and download the Benz software (Only can download one kind of software). After download, your Creader VII will be updated, and this software is binded with your device. What is the advantage? After doing that, not only for OBD protocol car models, you can diagnose Benz car model diagnose, now function is like diagun or master. Then this device will support all electronic control system diagnose for your Benz car.