The Targus Retractable Ultra Portable Laptop Mouse PAUM01U is a mini optical mouse with a sleek silver design. It features a compact size with dimensions of 3 inches in depth, 0.09 inches in height, and 1.4 inches in width. Weighing only 0.09 lbs, this mouse is lightweight and easy to transport. With a resolution of 800 DPI and optical tracking method, it offers precise and smooth cursor movement. It has 3 buttons, including a scroll wheel, and connectivity via a wired USB connection. Compatible with various operating systems like Mac OS X, Windows Vista, and Windows 7, this mouse is a convenient and reliable choice for users on the go.