Thank you for your questions about our products. I think I need to explain. 1 12.5 inches resolution displayed on the screen is 1920 * 720, but the actual real resolution is 1920 * 1080, the screen size of the different, direct display of the resolution is not the same, this is a high-definition Blu-ray IPS Premium touch screen, this is a premium product! 2 For the installation instructions, I placed in the package, you said you need to install the video, I sent you the first time after you received, and we have a professional team of engineers online to help you solve the problem! 3 For all the questions you raised, I also explained to you all, and, I for your questions I have also been compensated, and I have a team of professional engineers online to help you solve the problem, and we have a team of professional engineers online to help you solve the problem. I am very happy to receive all your feedback, I will be more professional way to communicate to each customer, our products