No need to be coy about the size of your fish pond, or the fish inside! The exotic koi happily floating within the world’s tiniest aquarium is a Showa Sanshoku Koi – one of Japan’s most popular ornamental fish. Attractively wrapped in a specially designed box, this fun mouse is also perfect for any loved one who works with a computer, your koi obsessed 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