【3 in 1 Models RC Building Set】Stunning appearance! Kids loooove this AAA777USA RC Building Set ! Featuring 2 powerful motors, 2 large tracks, each powered by 4 wheels. Tracked car/tumbler robot/racing tank provides a triple build-and-play fun. 【Flexible Remote Control】Flexible to build 3 different models, rc all directions and 360 degree rotation, race together with different frequencies, use indoor and outdoor, also flexible on building alone or as a team. Buy 2 or more to unlock more fun! 【Easy to Charge】USB charging design, equipped with built-in rechargeable (new version) in the racing car/robot, charged 1.5 hours can play continuously 25 min(powerful than 90% other rc building kits). 【Imagination & Creativity】This durable educational building toy features realistic movement and mechanisms，which can promote child's hand-eye coordination and practical ability, enhancing critical thinking and development skills interestingly. Great gift for boys & girls on birthday/Children's Day/Christmas/Chanukkah/summer holiday/STEM/summer camp activities/back to school, especially for 8,9,10,12,14 year old kids teens who love to tinker and learn about science. 【Superior Material Quality】 ABS plastic, BPA-free. Blocks hold tight and durable. We usually deliver more pieces than stated. Find us if you have any questions, we insure you 100% satisfaction.