Learn to build a city through this kit! Children will learn to control DC motors and sensors through app! This kit contains 300 pieces where 8 different models could be built! Build your city today! This kit consist of coding/programming features where children will learn how to code the builds through a smartphone application! Learn how to code with RoKids+, connect to DC Motors and Sensors through your Tablet or Smartphone. This set allows you to build 8 different models: * Electric Saw * Cart * Excavator * Fork Lift * Gripper * Mixer * Overhead Crane * Scissor Lift