[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 delivers 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 remain on while allowing the motor to be turned on or off separately. [Compatibility with Most Building Block Devices] The set is compatible with most standard building block brands available on the market. [Safety and Learning for Kids] Made from high-quality ABS plastic. By assembling building blocks, children can improve hand-eye coordination, stimulate imagination, and enjoy the satisfaction of creating functional models. The color of the LED light cable is randomly selected and cannot be specified. 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 above items are included; other accessories are not included. Note: Lighting and display differences may cause slight variations in the color of the item shown. Measurement may vary by +/- 1-3 cm.