[2*M Motors for High-speed] The motor provides strong power. High-speed and medium-block motor power supply kit. Supports forward and reverse operation. [Remote Control & APP Control] Includes Bluetooth remote control. Supports control of mechanical parts forward, backward, left, and right. Reverse switching between positive and negative polarity. You can also download the app to control the device. The remote control requires 2 x AAA batteries (not included). [4-Terminal Master] This 4-channel master features 7.4V output, 500mAh battery capacity, and 4 motor output ports. [Adapt to Most Block Cars] The set is compatible with most types of block cars available on the market. [Safety and Learning] Made of high-quality ABS plastic materials. By assembling blocks, children can improve hand-eye coordination, stimulate creativity, and enjoy the satisfaction of building. Color: As shown in picture Material: ABS Plastic Package Contents: 2 x Medium Motor 1 x Remote Control 1 x Lithium Battery Box 1 x USB Charging Cable (cable color is random; specific color requests cannot be accommodated) Only the above package content is included; other items are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error is +/- 1-3 cm.