ITEM NAME:4-wheel Smart Robot Car Chassis Kits Chassis Auto accessories For Ardui WOA MET Descriptio n Description: 100% Brand New, High Quality Smart Car Chassis Tracking Car Robot Car Chassis With Code Disk Ideal For DIY The Mechanical Structure Is Simple And Easy To Install. This Car Is A Tachometer Encoder Comes With 4 AA Battery Compartments And A Power Switch. (Batteries Not Included) Can Be Used For Distance Measurement, Speed. Can Be Used With Other Devices To Achieve Tracking, Obstacle Avoidance, Distance Testing, Speed Testing, Wireless Remote Control And Other Functions. Please Note: The Car Chassis Is Transparent And You Need To Tear Off The Protective Paper Specifications: Material: Plastic Color: Picture Coloring Dimensions: The Wheel Diameter Is About 6cm, The Thickness Of The Bottom Plate Is About 3mm, The Length Is About 25cm, And The Width Is About 14.8cm. Package Included: 1*4 Wheel Car Kit Note: The Motor Power Supply Is 3V~6V. All The Above Parameters Are No Load Test We offer you what you need! 4-wheel Smart Robot Car Chassis Kits Chassis Auto accessories For Arduino Kit.1 4 Wheel Car Kit. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. Ideal For DIY. We'd like to settle any problem in a friendly manner. Descriptio n.