Multi-function pens, like laser pens, PDA pens, and light pens, take multi-tasking to the next level. Allow your clients or employees to switch from making their presentation with a laser pointer to taking notes when the group discussion begins with just a click of their pen. Other styles allow your clients to take their multi-function pens to the field with upwards of five functions, including a ruler, Phillips and flathead screwdriver, and a stylus.