ROELK702 Mechanical Wood Models; Airship Air Vehicle - with wind-up springROELK702 Mechanical Wood Models; Airship Air Vehicle with wind up spring Robotime ROKR airship model 3D wooden puzzle LK702 is powered by a wind up spring. It has a retro steampunk outlook with a delicate wooden skeleton. Tease your mind by constructing gears and aircraft. Watch it rushing out with its spinning propellers! *Note: Due to customs policy wax may not be included in packages. KINETIC MECHANISM: Driven by wind up spring and gear trains,