– Mechanical gears,with detailed designs,stylish,high-quality 3D wooden puzzle,are operated by wind or motor – It is a challenge for ages 12+,and can open a new world of creativity,knowledge,and pleasure – Following step-by-step instructions and illustrations you will spend hours of fun with it width="560" height="315" src="https://www.youtube.com/embed/YhNhg0xXLkw" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen
