1、The product using high quality aluminum alloy shell with good heat dissipation effect 2、Come with high PPI 4 inch TFT LED display, used for Raspberry Pi 4B / 3B / 2B / B + / A + 3、For Raspberry Pi shell come with 6 keyboards and remote IR, support infrared function 4、The product is easy to operate, you can switch button function by yourself, very convenient 5、This set is small in size, easy to store and convenient to carry, useful and practical 1 x Aluminum Alloy Shell Upper Cover1 x Aluminum Alloy Shell Lower Cover1 x Screw Package1 x Display Item Type: Aluminum Alloy Case for Raspberry PiLCD Screen: Size: Approx. 65 x 56.5mm / 2.6 x 2.2in, it's the standard for Raspberry Pi HAT extended sizeResolution: 320 x 240, 2.4 inches high PPI displayWith 6 keyboardsWith infrared functionOther Instructions: Infrared receiver functionWorking Frequency: 38KHzReceiving Distance: Approx. 18 ~ 20meter / 59.1 ~ 65.6ftReceiving Angle: +/- 45 DegreesInfrared Transmitter Function: Wavelength: 940nmTransmission Distance: Approx. 7 ~ 8meter / 23 ~ 26.2ft