The Activpen is Promethean's unique battery-free, wireless mouse-pen. It writes like a pen and acts like a mouse. The Activpen can activate mouse rollovers (hovers), right-click, drag and drop, highlight, open tools and applications, switch between pages and activate sounds and images. The mouse functionality allows you to 'double-click' for additional helpful tools with onscreen guidance. The Activpen is so accurate and precise, you can measure and mark on the Activboard to the millimeter or degree.