The Petite Mouse Medical Grade, Waterproof, Hygienic Optical Mouse is specially designed for use in medical, industrial and marine applications. Compact 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. Disinfectable This waterproof and chemical resistant mouse can be disinfected with standard cleaners and disinfectants, alcohol and even 10% bleach solution. May be disinfected as part of an infection control program Suitable for moist and dusty environments Waterproof for easy cleaning Built to last - limited lifetime warranty Three extra buttons for effortless scroll up, scroll down & scroll lock