There is a new Keyboard in town which will stand the test of time.The Stealth Computer model 2000-DT-TB will pull through rain, dust and occasional coffee spills.� It is built using a highly rugged, stainless steel case and industrial silicone rubber pad, ensuring NEMA 4X protection. What this NEMA 4X protection means is that it will provide a degree of protection splls, dust, rain, and from windblown dust. Basically you can use this keyboard both inside and outside.The Stealth Computer model 2000-DT-TB features 114-key functionality, including 24 function keys and a 10-key number pad.