[Battery Box]The featuring with AA battery box which can run 2 xl-motors or 4 m-motors at the same time, requires 6 AA batteries (not included). [M Motor for High-speed] The motor provides strong power. High-speed block motor power supply kit. Support forward and backward. [Switch and Light Cable] Include a switch and cable that will allow you to stack the switch and light connectors on the battery pack. This lets you have lights on and still be to turn the motor on or off separately [Adapt to Most Block Devices]The whole set can basically adapt to most type of block Devices in the market. [Safety and Learning ]Made of high-quality ABS plastic materials.By assembling blocks, children can exercise their hand- coordination , stimulate their , and make enjoy the joy of doing things. The color of the LED light line is random and cannot be :ABS plastic colour:Gray Package Contents: 1 x Medium Motors 1 x Battery Box 1 x LED Light Cable 1 x Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.