Features: Brand new and high quality Built with RPI I/O controller, and it is a package containing the silicone designed inside the RPi. USB has more total bandwidth and faster transmission speed. The camera and display connectors are interchangeable, so you can have one each, or two are the same. The speed is more than twice as fast as before, and it is very smooth. It adopts BCM2712 Arm A76 processor with 2.4GHz, which is three times faster than the previous generation. Specifications: Material:Metal Type:4G/8G Size:Approx.85x56mm/3.34x2.2inch Package Includes: 1 Set Development Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.