Let’s milk this one for all it’s worth! In the “mooed” for a Cow mouse? Ours is prime, Grade ‘A’ technology. Don’t follow the herd, cut loose and wrangle yourself a Cow mouse today. Once you try it, you’ll say “Well done!” Attractively wrapped in a specially designed box, this fun mouse is also perfect for any loved one who works with a computer, your country bumpkin friend or just to treat yourself. This great gift idea can brighten up someone’s workday or add a bit of fun while e-mailing their friends or flirting with their latest Facebook crush! Advanced 3-Button Optical Scroll technology provides precision control Plug-and-Play Convenience – Simply connect the mouse to your USB or PS/2 port 800 DPI Optical Sensor – High resolution for powerful and smooth tracking performance No mouse ball – Works on virtually any surface, no cleaning or mousepad needed System Requirements: Windows? 95/98/2000/ME/XP/NT/Vista, Mac OS X 10+, Linux No additional software needed – Works right out of the box Safety: FCC CE Approved