The Microsoft 3500 Gray Track Wireless Mouse - Model 1427 is a standard mouse with a sleek gray color and a 3.8 inch length. It features a BlueTrack tracking method, 3 buttons, and a scroll wheel for easy navigation. The mouse is wireless, with a maximum DPI of 3500, and is made by the trusted brand Microsoft. It is designed for easy use and comes as a single unit, perfect for those looking for a reliable and efficient mouse for their computing needs.