DFRobot Raspberry Pi 4 Metal Case consists of a metal case with a frosted tactile feel and a 3.5-inch TFT touch screen. The case features a touch screen with a resolution of 480x320 and a refresh rate of 60 frames. It can smoothly play all kinds of video information or games. The display is stable without flickering and has a touch function that can detect finger presses on the screen and respond in a timely manner.