The Adesso(R) iMouse W4 Waterproof Antimicrobial Optical 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 prevent any moisture or liquids 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 a mouse pad. IP67 Waterproof Design The Adesso iMouse W4 has a waterproof design that’s rated for IP67. Its waterproof design housing protects its internal electrical parts and provides protection from powerful water jets, oil, and dust. Antimicrobial Medical Grade Made with antimicrobial materials, this device prevents the growth of harmful bacteria and protects against the build up germs between washings. Enhanced Optical Engine Optical sensor technology improves precision and even lets you work on most surfaces such as wood, marble and leather without a need of mouse pad. 1000 DPI Resolution The iMouse W4 provides responsive, smooth cursor control, precise tracking and easy text selection thanks to its high-definition optical tracking (1000 DPI). Specifications Tracking Method: Optical Interface: USB Buttons: 3 buttons (Right & Left mouse button, Scroll Wheel and Middle Button Resolution: 1000 DPI Switch Lifecycle: 3 Million Cycles Dimensions: 4. 7 x 2. 5 x 1. 5? (119 x 64 x 37mm) Net Weight: 0. 18 lb.(83g) Cable Length: 6ft (1. 8m) Waterproof Rating: IP67