【Perfectly Compatible】Servomotors, functional accessories. All parts are compatible with parts from popular building brick brands and with the technology of remote-controlled building brick models. Parts can be combined and matched according to your needs and preferences. Note: This product does not include a battery with power function and must be purchased separately. 【Brick Remote Control and Receiver】The motorized system has a 4-channel selector on the remote control and receiver. To work together, they must be set to the same channel. The remote control is powered by 3 x 1.5 V AAA batteries (batteries not included), 2.4 G four-channel switch with 4 modes and can remotely control 4 receivers. 【Fun and Safe】Assembling the motor is not only fun, but also a challenge, which allows users to improve their practical skills and let creativity flow. Technic Motor Set offers hours of fun and is a fantastic 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 building the blocks allow your child to practice hand-eye coordination, stimulate imagination, and let your child have fun making things. Warning: Use under adult supervision