Contain Scratches on the bottom. Tested and Work Great Microsoft - Ergonomic Wired Mouse - Original - RJG00001 - Black - GRADE A Work in comfort all day with reduced risk of fatigue and injury. Durable and lightweight, this Microsoft ergonomic mouse is designed for exceptional control with ultrasmooth tracking on a variety of surfaces. Wired for reliable speed and accuracy, it also features an optimized scrolling wheel for precise web and document navigation. Plus, multitasking is a breeze with two programmable buttons you can customize for the actions you use most. Next-level comfort Work all day with reduced risk of fatigue and injury. Precise tracking sensor Use on a variety of desk surfaces. Designed to last It is lightweight, durable, and wired for reliable speed and accuracy. Multitask your way Two programmable buttons let you customize for the actions you use most. Exceptional control The optimized scrolling wheel allows precise web and document navigation.