Interesting and Changeable Building Kit: Can be spliced into one of three forms you like: robot, tank and exploration vehicle. The building blocks use mechanical transmission structure, with high-performance motor and smart chip, and support two Bluetooth remote control operation modes: handheld remote control and mobile phone app. Can achieve forward, backward, left and right turns, rotate in place. STEM Projects Educational Toy: Includes 606 small blocks, all packaged in individual bags with detailed instructions, easy to understanding and building. Not only enjoy the fun of building block toy splicing, but also experience the playing method of electric toys Powerful Electricity: Among the parts is a 400mAh battery block for building. Charging time: 90 minutes; Fully charged use time: 40 minutes. The handheld remote control needs to be installed with 2 AAA batteries (not included). Maximum distance of remote control: 32 ft(10 m) High-quality and Safe Toy: Made of ABS environmentally friendly and safe materials and natural toner raw materials, safe and harmless. The building block toys built have a solid structure and are close to reality. It can better protect children's safety when they enjoy building toy fun The Best Gift: This building blocks toy could promote child’s hand-eye coordination and creativity, enhancing critical thinking and development skills. Suitable for children 8 9 10 11 12 years old and up. Perfect gift for boys and girls.