Safe Material: This track vehicle set is made of high-quality and non-toxic ABS materials and does not harm children\'s health. Due to the round edge and smooth surface design, you no longer worry that children will get hurt.\r\n\r\nElectric & Manual: Electric & manual dual mode, step track design, car taxiway can climb stairs automatically. Pressing the button will play sound effects, and also can play music, cool dazzling dynamic music effect. Batteries are not included, please prepare 3x 1.5V AA batteries before use.\r\n\r\nEducational Toy: You can guide your baby to make the toy cars through the obstacle and pass each challenge, which is great for training and improving kids’ motor skills, problem-solving, and hand-eye coordination.\r\n\r\nInteractive Toy: Let your child share the fun of playing with his friends, ideal for encouraging children\'s imagination and improving teamwork to solve problems. Parents can also accompany your children to play and enhance their relationship.\r\n\r\nBest Kids Toy: This car adventure toy is a favorite gift for 3+ years old boys and girls, suitable for early education, easy to operate, and ideal for indoor and outdoor games, families, kindergartens, amusement parks, etc.