Features:Made of high quality plastic, not easy to age, durable and reliability, with long serving life.Low cost real trackball works with any PC application.Can be used on a PC as a mouse or connected to your game console. This LED trackball mouse features with smoothly trackball rolling action.This trackball mouse size is unified in the game console, which can satisfy the design of various game console.Specifications:Material: plastic, metalMouse size: approx.10 x 10 x 4cm/3.94 x 3.94 x 1.57inchDiameter of track ball: approx. 4.5 cm/1.77inchNetwork interface: wireConnection method: wirePackage Included:1 x LED trackball mouse 4 x ScrewsNote:1. It doesn't support for Windows 10 system for the PC2. The product you received can be installed by yourself.3. Due to manual measurement, please allow 1-3cm error, please make sure you don't mind before ordering.4. Due to different monitor, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.5. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering..