It is a set of DIY smart robot car electronics soldering kit for students, which is made of material for and safe in use. This set of professional teaching equipment for teaching can train student's practical ability and their interest in learning. Features - ColorAssorted Color - Material: Plastic, Metal, Photoresistor. - Size: 11.00X8.00X2.00cm/4.32X3.14X0.79inch. - Battery: 2AA batteries (not included). -Note: The color of the circuit board is random. - This smart robot car is an educational kits for beginners to get hands-on experience, electronics assembling and robotics knowledge. - It much easier and very convenient to assemble the car and reduce the errors. - A great kit for you to start to learn about the basic components and modules in electronics, and then use the knowledge to explore greater fields! - This electronics soldering kit for teaching can train student's practical ability and their interest in learning. - Spark and encourage child's talents and passions and keep electronics learning interesting and fun. Package list: 1 set x smart car DIY kit