Hand cranked generator fun scientific experiment small invention children's toy DIY small production handmade puzzle childrentoy

Is Electric : No Theme : Fantasy Sci-Fi Warning : / Certification : CCC Origin : Mainland China Recommend Age : 14+y Hand cranked generator fun scientific experiment small invention children's toy DIY small production handmade puzzle childrentoyProduct name: Hand cranked generator Color: Wood color Packaging: 1PCS Style: Handmade construction