Built-in fully waterproof and dustproof technology to protect the keyboard from contamination, Ideal for Industrial, Food Service, Marine, Manufacturing, Military, and Medical applications, etc. Completely dust-proof design, fully sealed, water resistant when immersed in 1 meter deep water for 30 minutes Standard 104 keys full-size keyboard and included 12 multimedia keys Quiet keycaps support up to 5 million keystrokes life, 4pcs non-slip feet to ensure that the keyboard is not easy to move during use Withstand unforeseen site conditions, whether slightly splattered or soaked, the keyboard looks like new after washing Classic and Rugged design, adjustable leg, Plug-n-play, compatible with most Window operating systems.