This keyboard is waterproof and contaminate-proof and is designed for industrial applications where water, fluids, dust and dirt can damage a regular keyboard. These keyboards are sealed with 100% silicone and can be dipped in water and cleaned with soap or other cleaners (non-petroleum based). Our products can be used in Food Service, Industrial, Manufacturing, Marine, Military, and Medical Applications. This keyboard also has a power ON/OFF button allowing you to turn the keyboard ON or OFF. This feature will allow you to clean your keyboard while it is still connected to your computer without disconnecting it. Features: With keyboard main power ON/OFF switch Multi-finger touchpad provides convenient mouse function Rubberized surface provides comfortable typing Compatible with: Windows XP, Windows Vista, Windows 7, Windows 8 Specs: Communication: USB 1.1 (connector not spillproof) Key layout: 87 keys + 15 functional keys Dimensions: 298(L) x 213(W) x 11(T) mm OR 11.7″ X 8.38″ X 0.433″ Protection level: IP68 Approvals: CE, FCC, RoHS & WEEE