Made of high- material, durable, and stable to use. This allows you to connect all types of funny things as input. It is an invention kit that makes your computer that anything is a keyboard. The kit uses high resistance switching to detect when you have made a connection even through materials that are not . The ATMega32u4 connects to your computer using the human interface device () protocol which means that it can as a keyboard or a mouse. No need to , no need to connect lines, no need to install software, just need to connect USB to use, very simple Specifications: Item Type: Main Control Board Kit Communication interface: USB Colour:As shown Material:PC+Metal Package Contents: 1 * Controller Board 10 * Clips 1 * USB Cable 10 * Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.