[Battery Box] The power system features an AA battery box that can run 2 XL motors or 4 M motors simultaneously, requiring 6 AA batteries (not included). [M Motor for High-speed] The motor provides strong power. High-speed building block motor power supply kit. Supports forward and reverse operation. [Switch and Light Cable] Includes a switch and cable that allow you to stack the switch and light connectors on the battery pack. This enables the lights to stay on while allowing the motor to be turned on or off separately. [Adapt to Most Building Block Devices] The set is compatible with most standard building block brands on the market. [Safety and Learning for Kids] Made from high-quality ABS plastic materials. By assembling building blocks, children can improve hand-eye coordination, stimulate imagination, and enjoy the satisfaction of creating. The color of the LED light cable is randomly selected and cannot be chosen. Material: ABS Plastic Color: Gray Package Contents: 1 x Medium Motor 1 x Battery Box 1 x LED Light Cable 1 x Switch Only the items listed above are included; other products are not included. Note: Lighting and display differences may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowance is +/- 1-3 cm.