Indulge your gadget-loving geekiness with this high tech pen. This high-tech gadget has enough bells and whistles to make most geeks drool. Twist the metal tip and you get a ballpoint pen. Press the top button to turn on the laser pointer, press the bottom button to cycle through the flashlight and UV light. The flashlight even comes on a flexible rod for precision aiming. 5 1/4" long. Three LR41 batteries included.