The case can be used as for case with mini cooling fan and 3.5 inch screen installed. Please note that the ABS case is specially designed for 4 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/ 3B/ 3B+ versions. When used for Pi 4B, can support for Raspbian system, for system. When used for 3B/3B+, 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 InchLCD Type: TFTLCD Interface: SPIContact Screen Type: ResistiveContact Screen Controller: XPT2046Backlight: LEDResolution: 320*480 (Pixel)Power Consumption: 0.13A*5VOperating Temp. (): -20~60Colour: blackMaterial: ABSPackage Contents:1 x Contact Screen1 x Stylus1 x Black ABS HousingOnly 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.