1、2 MODES: You can switch between 2 motion modes, one needs 2pcs AA batteries and the other is powered by solar panels, choose according to choice. 2、4 WHEELS DRIVE: You can use the assembly vertical wheels on 4 corners to move forward, which can stimulate children curiosity, creation and hand on ability. 3、ASSEMBLY: DIY Experiment building car includes all materials needed for simple buckling or screw assembly, and the assembly can be completed by simple wiring. 4、OPENABLE CAR DOORS: Educational solar powered car has exquisite and realistic interior decoration, all the details worth your trust, and help kids to clearly know the internal structure of the car. 5、DIY: For your younger child from entry level to advamced level to chanllenge their manipulative skills, encourage your kids to explore their imagination. 1 x Vehicle Body2 x Assembled Plates1 x Small Parts Assembly Plate1 x Solar Panel4 x Wheels1 x Instruction1 x Switch Electronic Component1 x Car Seat Part5 x Bag of Screw parts1 x Screwdriver3 x Door And Window Parts1 x Gear Motor Assembly1 x Wheel Iron Sticker1 x Paste Paper2 x Doors Item Type: Engineering science assembly vehicleMaterial: Plastic, electronic componentsBattery: 2pcs AA battery (not included)Power Supply Mode: Solar panel power supply, AA battery power supply (battery not included).Age: Above 6 years old