Intelligent Robot Car Kit Acrylic Chassis with 4WD Mecanum Wheels, Suitable for Programming Kit for Beginners DIY Robot Accessories; in the cleaners assembly 1. Intelligent tracking robot chassis with high degree of freedom, suitable for individuals; b from DIY, popular science education, growing interests, educational toys for kids and family kits; educational activities. 2. The mechanical structure is simple, and the universal chassis wheels are very flexible. It can move laterally without turning, adapting to difficult terrain. With these four new combinations, the coacute; The fully sporty functions are even more flexible and convenient. 3. No plug is very convenient, and the whole system is highly integrated. It can be used to measure distance and speed. Color: oacute; Yellow Material: Plastic Product Description Application: mother education, electronic projects RPM (with tires): 240 Tire diameter: 66mm Support; Reduction Ratio: 48:1 Current: 120mA Voltage: DC 6V Package Content: 1 Set of Assembled Electronic Auto Parts Only the above package content, other products are not included. Note: Light reflection and roacute; Different displays may cause the color of the item in the picture to be slightly different than it actually is. The allowed measurement error is +/- 1-3cm.