Rich interfaces and strong scalability Reserved GPO interface is easy to install, simple and beautifulFan can be installed Support fan installation, efficient heat dissipationSupports installation of cooling fans to provide better cooling for the Raspberry Pi, allowing it to work better and longer.Acrylic material can reduce the blocking of Wifi and Bluetooth signals.Made of high quality material, more durable.Applicable model: For Raspberry Pi 2B/3BColour:red + transparent white + blacktype:DMaterial:acrylicPackage Contents:1 x Acrylic Case1 x Cooling FanOnly the above package content, other products are not included.Note: Light shooting 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.