description:...it not only eliminates tangled cables, but also is smaller in size, lightweight and easy to store or carry. The receiver unit is mini size and you can store it easily in your travel bag.This mouse also offers a power off function underneath the mouse for power saving when not in use. The mouse is designed for portable notebooks; it’s cordless, compact, has power-saving functionfeatures:- stylish and comfortable alternative to notebook touchpad- mini USB receiver easy to storage- 800dpi optical sensor for superior precise tracking- power saving switch extends battery life- two AAA batteries included- port: USBsystem requirements:- IBM PC, Pentium 233 compatible or higher- Windows 2003/XP/Me/2000/98, Mac OS 8.6 or higher- available USB port- CD/DVD-ROM drive for software installationpackage content:- mouse Wireless Mini Navigator Silver- mini USB receiver- AAA baterry x2- user’s manual- MouseMate CD Driverspecifications:- body weight: 115g- body size: 105x50x30 mm- gift box size: 110x45x230 mm