【Perfectly Compatible】Servo motors, functional accessories. All parts are compatible with parts from popular building block brands and with the technology of remote-controlled building block models. Parts can be mixed and matched according to your needs and preferences. Note: This product does not contain a battery with power function and must be purchased separately. 【Brick Remote Control and Receiver】The motorized system has 4 channel selectors on the remote control and controller. In order to work together, they must be set to the same channel. The remote control is powered by 3 1.5V AAA batteries (batteries not included), 2.4G four-channel switch with 4 positions and can remotely control 4 receivers. 【Fun and Safe】Assembling the motor is not only fun, but also a challenge, allowing users to improve their hands-on skills and let their creativity flow. Technic Motor Set offers hours of fun and is a great gift for birthdays, Christmas and other special occasions. 【Perfect Gift Choice】This product is not only a toy, but also a new attempt on the path of learning and education. The durable motor set provides hours of fun, and the building of the blocks allows your child to practice hand-brain coordination, stimulate imagination, and let your child have fun doing things. Warning: For use in the company of adults