The case can be used as for case with mini cooling fan and 3.5 inch screen installed. note that the ABS case is specially designed for Model B only. The 3.5 inch LCD Contact screen has 480 x 320 resolution, with resistive Contact control SPI Interface Power: 5V 0.13A. The LCD Contact screen is suitable for 4B or 3B or 3Band versions. When used for Pi 4B, can support for Raspbian system, for system. When used for 3B or 3Band, can support for Raspbian system, for system ,for system. The case has the split design for easy installation, protecting your pi computer and screen, Screen Size: 3.5 Inch LCD Type: TFT LCD Interface: SPI Contact Screen Type: Resistive Contact Screen Controller: XPT2046 Backlight: LED Resolution: 320x480 (Pixel) Power Consumption: 0.13Ax5V Operating Temp. (): -20-60 Colour: black Material: ABS Package Contents: 1 x Contact Screen 1 x Stylus 1 x Black ABS Housing 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.