About The Book Bring a touch of magic and fun to your writing with this official licensed Harry Potter™ Dark Mark Projector Pen. Push the switch and watch the symbol of Lord Voldemort and his Death Eaters appear. Turn out the lights for even more projection fun! MAKES WRITING FUN: Impress your friends with the bright Harry Potter Dark Mark Projector Pen, which makes writing magical, fun, and mysterious! MULTI-USE PEN: Perfect for Harry Potter themed gifts, school supplies, stocking stuffers, and more! SMOOTH WRITING: This high-quality ballpoint pen with black ink writes smoothly and easily. BATTERY INCLUDED: This Harry Potter Dark Mark Projector Pen will brighten your day for a long time to come! COLLECT THEM ALL: Harry Potter: Patronus Projector Pen also available.