ZMBlock Technology Power Function Motor Building Block Programming Education 1 Medium Motor, 1 Battery Box, 1 Light Cable, 1 Power Function Switch STEM Toys for Kids Adults (4 Pack) ? ? M Motor for High Speed? The engine provides plenty of power. Power supply kit for high-speed building blocks. Forward and backward support. ? Switch and light cable? Include a switch and cable that will allow you to position the switch and light connectors on the battery. This keeps your lights on and still allows you to turn the engine on and off separately ? Adapt to most construction equipment? The entire kit can basically adapt to most types of construction equipment available on the market. ? Safety and learning for children? Made of high-quality ABS plastics. By connecting the blocks, children can exercise their hand-brain coordination skills, stimulate their imagination and make them enjoy the joy of doing things. Battery Box Size: 9cm*6cm*3cm Characteristics: Operating voltage 9V Colleagues start 2 XL or 4 M engines Three-stage switch control 6 AA batteries(not include) M Medium Engine Size: 4.8cm*2.3cm*2.3cm Characteristics: Rotation speed ??? Torque??? Suitable for light racing cars Switch Size: 1.3cm*3cm*2cm Characteristics: current control switch Current direction switching Inverted electric controls Luminous Line of Light Characteristics: The total length of both ends is 50 cm