This Blue Adesso iMouse 2.4 GHz Wireless Mini Mouse fits wonderfully with your computer and allows you to work freely with no space constraints of wires, offering 30 ft. of wireless freedom. Optical sensor technology improves precision and even lets you work on most glass, marble, wood, and leather surfaces without the need of a mouse pad. With an optical resolution of 1200 DPI, you can browse comfortably basically on any surface. With the on/off switch and built-in auto-sleep features, you can automatically maximize your battery life when your mouse is not in use. The compact and durable design will make this mouse become your ideal choice when you travel. The small, compact size makes it easy to store it in your laptop bag or briefcase while on the go.