🚀 Build, Learn, and Let It Roll! Perfect for adults and teens, this puzzle enhances spatial awareness while providing a rewarding hands-on experience. Complete your railway set with additional UGears accessories for an immersive building experience. Crafted with intricate details, this model pays homage to the Victorian Age of innovation. Enjoy a fully mechanical model that operates without batteries, making it eco-friendly and hassle-free. Experience the joy of building a self-propelled steam train model that moves up to 13 feet on a single wind! Inspired by Victorian design Self-propelled motor 538 puzzle pieces The Ugears 3D Puzzle Train V-Express is a self-propelled wooden model designed for adults and teens aged 14 and up. With 538 pieces, this intricate steam train puzzle combines fun and education, enhancing spatial awareness while celebrating the engineering marvels of the Victorian era. No batteries are required, making it an eco-friendly choice for hobbyists.