The Petite Mouse Waterproof, Hygienic Optical Mouse is specially designed for use in medical, industrial and marine applications. The mouse is compact in size and features a 5-buttons designed for right & left clicking and scrolling up and down just like to a conventional non-waterproof mouse. The Petite Mouse is a fully sealed IP 68 and compatible with both USB and PS/2. This waterproof and chemical resistant mouse can be disinfected with standard cleaners and disinfectants, alcohol and even 10% bleach solution.