The compact size and portability makes the WKB-4020UB ideal for users in the mobile environment and for those with minimal system set ups such as android boxes and smart TVs.  With the WKB-4020UB you can sit, relax, and control your entertainment the way it was meant to be! The built-in touchpad provides smooth tracking for overall comfort, convenience and faster browsing.  No need to worry about arrows or buttons, just glide your fingers along the touchpad to get where you want to go.  Use the built-in multimedia hotkeys to control your media, navigate the internet, access your email, and control the volume.