Caran D'Ache 849 Aurora Borealis Set - Ballpoint Pen and Mechanical PencilAurora Borealis 849 Writing Set a spectrum as bright as the northern lights Caran dAche unveils Borealis, a new set comprising an 849 ballpoint pen and a mechanical pencil with the most intense, subtle and enchanting of gradations. From violet to green, a spectrum as bright and rhythmic as the northern lights. The two icons draw their magic from fantastic nights, adopting a resolutely modern style. These two writing instruments complement each other