The Adesso iMouse W4 Anti-Microbial Waterproof Optical USB Mouse is the ideal pointing device for the industrial, medical and maritime industries because it is 100% waterproof and offers unique washing capabilities to eliminate germs and bacteria. The mouse also provides a unique inner air-tight case which prevents any moisture or liquids from accidentally getting inside the mouse. Finally, the optical sensor technology keeps the device precisely on point and lets you work on most of glass, wood, marble, and leather surfaces without the need for a mouse pad.