Although this is one of the more difficult models to build, your hands and brain will be fully engaged as you construct this mechanical marvel! Whether you go at it alone or work together with friends and family, it will test your hand-eye coordination, patience, and mechanical ...Although this is one of the more difficult models to build, your hands and brain will be fully engaged as you construct this mechanical marvel! Whether you go at it alone or work together with friends and family, it will test your hand-eye coordination, patience, and mechanical aptitude. Watch the Swing Ride come to life with lights, carnival music, and swings that are counter-rotating! Pieces are laser-cut from non-toxic plywood to create easy-to-punch-out pieces that fit precisely together. 3 AAA batteries required; batteries are not included.