According to Alchemy Gothic, the Icarus Ex Machina is based on the Icarus Project, the dream of mechanical flight. "From the blueprints of the Black Baron's own prototype pinion-frame, this amazing, technological masterpiece is spring-driven and is animated when the pendulus is pulled." Two-tone English pewter brass compass dial contraption that actually MOVES when pulled, and can be worn in either position. Wingspan is 5 1/2" across and 4" long. Comes on a 20" cable chain.