Washable Keyboard Black Washable and spill-proof - Circuit boards and thin film circuits have a completely sealed waterproof plastic handle. Embedded Multimedia & Internet Controls - Control your home entertainment functions with the built-in Multimedia and Internet features on the keyboards Membrane Switch - The membrane key switch features more than a five million lifecycle, and is designed with a silicone rubber material, which can reduce noise when typing, offering a faster and quieter typing experience. 104-Keys Internet Hotkey 5 Internet hotkeys (Back, Forward, Search, Refresh and Favorites)