The Microsoft Trackball Optical 1.0 X08-70386 mouse is a wired USB ergonomically designed trackball mouse in gray color. It features a scroll wheel, optical tracking method, and is manufactured in China. The mouse is compatible with PS/2 and USB connectivity options, making it versatile for different computer setups. The ergonomic design provides comfort during long hours of use, making it a convenient and efficient choice for users looking for a reliable trackball mouse.